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heyhoeudoin · 2 days

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LOYALTY BUILT FROM LOVE

"I will always be by your side."

pairing: senku ishigami x fem!reader

words: 5.4k

genre/s: fluff, mystery, storytelling in the third perspective (s1, s2)

warning/s: she/her, swearing, ambiguous/not direct ending

synopsis: there is always someone next to senku, all the time.

masterlist

a/n: i've been wanting to do something similar to my bakugo fanfic, "Indebted to you" for a while now, and i finally thought of one.

also woah, i posted... revolutionary!

ever since senku arrived at the newfound kingdom of science, he's always had someone next to him

that someone is you

you are never too far from senku

and senku is never too far away from you

when kohaku met senku under that log, that's when she saw you the first time

at first she didn't question it, thinking that you might've just not been there when she saw the fight, but after observing you and senku

she then changed her mind and thought it was strange that she didn't see you

the way the two of you worked together was mesmerizing; efficiently done in silence

she could see that the two of you have some sort of special relationship with that silent communication

you reminded her of her sister; almost princess like with the way you carry your knowledge and demeanor

that impression quickly changed when you flipped ginro and kinro to the ground when they tried to attack senku

it happened so fast that you were just a blur in the corner of her eye! you were faster than her and you took them both out with a single hand

at that moment she knew not to cross senku

she wasn't even sure if she could defeat you

she almost pities the long-haired man

when gen appeared, you didn't recognize him, but he had recognized you

of course he did

everyone in japan knows who you are and anyone who doesn't is living under a rock

he was confused on why a person of your caliber is acting like a servant

maybe for survival, but he's sure that you'd be able to survive on your own

but then he started observing the two of you and this master-servant relationship seemed normal on both end

it made him curious on just what exactly your relationship with senku is

his curiosity skyrocketed after he overheard a conversation between you and senku

gen stood at the bottom of the hut after you and senku climbed up. he was lucky enough that you didn't spot him (well, that's what he thinks).

"so," senku spoke. "do you know him?" then asked. there was a pause. gen thinks you might've gave a non-verbal answer. senku chuckles. "of course, i didn't think you would. he's just some tv show mentalist."

gen rolled his eyes at that, but agrees with what senku said. it would be very shocking to hear that you know of him. "so he's a psychologist?" the first words he heard from you.

"yeah," answered senku. "he wrote these magazines that some of the club talked about some times. it would have questions like "if you could only save one, would you rather save your mother or your partner?" how illogical is that?" he scoffs.

this time you chuckled at him. "but senku," you interrupted. "you do understand just how useful he is, right?" gen felt a chill run up his spine as his whole body tensed up. your light tone immediately changed to a more penetrating one. it almost feels like you're reminding senku of your authority.

"yeah, yeah, i know, and don't use that tone on me. you know that shit don't work," senku replies, dismissing your tone like it was nothing! and to which you giggled at in a playful manner. "so, your assessment of him?" he then asked.

"gen is like a stray cat; give him something to eat and he'll stay," you answered with smooth confidence. "sooner or later he'll ask you for something in exchange for his loyalty." you let out a chuckle. "isn't that right, gen?"

he quickly walked away and didn't look back

maybe you were the one to plant the seed in him

maybe it was senku with his fast-paced bringing back the modern world (and his charisma)

or maybe it was the both of you

but whatever it was, in the end you were right

gen became an important member of the the kingdom of science

although he still wants answers about the two of you

there's two stories that ruri likes out of all hundred tales

she loves sharing them the most

after all, it's the only two love stories from it

number ninety-eight: loyalty built from love there was once a girl who had everything everything but happiness the people around her always worshipped her like a god it made her feel lonely and dull but then she met a boy a boy who knew of everything everything except who she is she talked to him... she argued against him... she laughed alongside him she made him smile.... they were friends they were inseparable but then she felt love he didn't like love she was afraid he became distant she sought after him he stopped seeing her she went to him it was silent then she talked... then he shouted... then they confessed they were in love her love shined through the things she did for him loyalty knows no bounds when you're in love

number ninety-nine: learning to love there was once a boy who found everything interesting everything except love he thought it was illogical and he didn't want to feel it but then he met a girl a girl who can do everything everything except how to feel he talked to her... he fought her... he laughed with her... he smiled at her they were friends they were inseparable he felt different with her he didn't know what it was it scared him he tried to push her away she stayed he ignored her she confronted him it was silent then she spoke... then he screamed... then they confessed they were in love his love was seen from the way he treated her love wasn't so illogical than he thought he did

there was no names mentioned in the two love stories

ruri wished the founder of the village had included the names

maybe it did but was forgotten through time

kohaku didn't really care about her own romances

but if it's other's?

then that's when she's interested

she could never forget the scene she saw between you and senku after the grad bout ended

the placed turned quiet as the realization seeped in. the winner of the grand bout is senku which means... "the new village chief and the husband of the priestess is the winner of the grand bout, senku!"

"well, this is a pain in the ass," senku says as he stuck his pinky into his ear. "so i just have to marry ruri and the whole village is mine, right?" he approached ruri. "i'll do it then."

from the corner of kohaku's eye, she saw you hurriedly walk away with a tightly closed fist. you're actually walking away without senku. that's the first time she ever saw you go away from senku.

she turned back to senku who's staring at your retreating figure. he turned his head back and demanded, "wine! bring me wine!" then after that, it all happened so quickly. senku divorced her sister, took the wine, and ran back to the kingdom of science, dragging kaseki with him.

once they arrived, senku left towards the laboratory where you were, gathering the materials to make the sulfa drug. kohaku watched as you ignored senku. he reached up and flicked your forehead. the two of you talked, rather fast paced with how fast the two of you exchanged words.

senku gently reached out for you hand, bringing it up to his lay on his cheek. he turned his head and kissed your palm.

kohaku's eyes widen in shock.

it looked like you laughed and tackled him into a hug that almost caused you both to fall. you stepped back as you brought your hands up to cup his face. you spoke a few words, then brought your face down to his forehead, giving it a gentle yet light kiss.

kohaku's jaw slacked in shock.

she remembered being flustered, shocked, and confused from the sudden public display of affection the two of you showed

it changed the way she sees the two of you

she always thought that you were like a bodyguard for senku, but also good friends

but if that's how you two always act when you think no one's watching?

maybe the two of you aren't just friends

at first, homura went around spreading the fire to the village

then all she saw was black the next

when hyoga revealed that he was just a distraction, the fire wasn't as big as he planned it to be

in fact, he never planned for homura to be carried in bridal style by someone he didn't expect

did senku revive you? why would he revive you? wait, how did he even find you? your place is no where near where they are right now

it doesn't make any sense

but for now, he'll retreat

he'll surely be beaten by you in mere minutes

chrome admires you and senku, everyone could see that

senku taught him many things about being a sciencer and you'd teach him "life skills"

the two of you work so well together

there are times wherein he watches you and senku work in the lab and it would always leave him in awe

how can the two of you work that well and that fast without any talking?!

are you also a science user like him?

but senku said you weren't so that made him slightly confused

it became even more confusing when he saw you beat kohaku in a spar for the grand bout

just who are you?

and why are you so good at everything?

it reminds him of something but he can't remember what exactly

then he saw something between you and senku that he can't help but make assumptions from

senku turned away from the group after experimenting with the bamboo filaments. "damn it," he cursed out. "bamboo filaments are just fundamentally too weak for vacuum tubes." your shoulders dropped as you looked at senku in worry.

"i don't get science, but bamboo is too weak, is that right?" kohaku spoke up.

"what do we need?" chrome asked with desperation. "if we need something tougher, i'll go find it!"

"no..." senku turned around, showing his pained expression. "there's nothing better in this age."

kohaku and chrome gathered the baskets of rocks that he collected and placed them out in the open for anyone to look through. from the news that senku needed something other than bamboo, the villagers who were still awake gathered at the kingdom of science to help.

chrome turned to call for senku, but he hesitated.

you stood next to senku and gently placed a hand on his shoulder. he turned to you with eyes that chrome can't explain as he placed his hand on top of yours. you brought your other hand and took hold of his hand that was on top of your other one. you guided his hand to the side of your lips and placed a kiss on his palm.

chrome's bulged out of his sockets in shock. his face feeling a bit flustered.

you slowly went down his arm, leaving a trail of kisses. you stopped at his inner elbow and turned to his face. chrome thought you were going to kiss senku, but instead you left a peck on his cheek. you spoke a few words to him and he let out a small smile.

chrome knows that smile

it's the smile that he only gives to you

he never understood why that smile felt different from all the other smiles and smirks senku gives

but from what he just witnessed

maybe the two of you hold a special bond that he should've noticed sooner

it was senku's birthday

the entire village gathered at the kingdom of science

ruri stared at you from afar

you watched as senku was guided towards the newly built watch tower (observatory)

it was the first time she'd seen you not go after senku

after all, the two of you were inseparable

it reminds her about the two love stories from the hundred tales

you started walking away from her line of vision. ruri watched as you walked towards the watch tower as the main group of the kingdom of science left. she could see senku climbing down as well, then approached you. you immediately took his hand in yours and placed the other on his cheek. you spoke a few words then leaned down, giving him a tender yet short kiss on the lips.

on the lips.

AND HE DIDN'T PUSH YOU AWAY!111!1!!!

ruri doesn't remember what happened after that

she was too flustered over the sudden public display of affections the two of you shared that it was the only thing stuck in her head for a while

although, she now hopes that her two favorite stories were based off of the relationship you and senku hold with each other

if only

the first time kohaku, well, anyone, saw you cry was when senku's father relayed a message to you (instead of his own son)

"senku, it's you, isn't it?"

"—nah, you don't need that dramatic father-and-son crap, do you?" senku cackled from that. "but y/n better be there standing next to you like she always is." it was the first mention of you from the record. "i know rebuilding japan will be your priority, y/n, but i also know that you'll stay by senku's side to rebuild the world. take care of him for me, y/n!"

from the corner of kohaku's eye, she saw you raising your hands up to your face, covering it. she saw senku move his arm that lays on your lower back. it looks like he's comforting you.

something then happened that kohaku can never forget

it'll be embedded in her head for so long

kohaku walked towards senku about to call him out, but stopped mid walk. senku stood next to you; both of your backs facing her. he turned his head to look at you. you turned your head to look at him. a few words were exchanged. he raised his hand and gently held your chin. he pulled you towards him and gave a short peck, but then you took hold of his collar and smashed your lips back onto his.

...

kohaku paused for a second. "senku!" then decided to just call the scientist out and continued with what she was going to tell senku either way.

gen was about to go up the observatory when he heard you and senku having a talk

"hey, senku, how would you feel if i..." your question trailed off, hinting at something that seemed like only you and senku know about, or you did something non-verbal.

there was a pause; senku probably thinking over his reply. "but i thought you like playing this game?"

they were playing a game? at this time? gen thought to himself, confused.

"of course i do; it amuses me. this game can only be played a few times after all. i'm only asking because i thought it'd be my turn to do it," you clarified which didn't really make any sense to gen at all. what you said got rid of the image that you two are playing game. just what the hell are you two talking about up there?

there was another pause. "just come up already. what do you want?" it was senku calling him.

kohaku was never afraid of you

why would she be?

you're no enemy

"senku, let me make something clear," kohaku called out. "homura's movements are exceptional."

"gymnastics," says senku. "it's a skill that doesn't exist in your age. y/n can do them too." he jerked his head to your direction you.

"we won't be able to capture her unharmed, but i could behead her with my sword. am i free to kill her?" a serious question kohaku dropped. yours and senku's eyes narrowed at her.

"kohaku, have you ever killed a human being?" you asked kohaku, now standing in front of her. kohaku opened her mouth, but you raised your hand up. "of course you haven't—i know that—and you'll hesitate when the time comes, but, please, kohaku," you called her name with a shaky tone and a hint of guilt that she never heard from you. "never offer yourself to kill another human being. you need to keep that morality with you, it's what makes a person human."

kohaku understood what you said

but she was left with questions that hung in the air, afraid to be asked

were you surrounded by death through killing?

or were you the one killing?

she really wouldn't dare ask

gen knows just how formidable the people around tsukasa are

but the thing is the kingdom of science has you

and he kind of wants to brag about that

"i'm sure you guys know how strong tsukasa is, but it's not just him. the people around him are formidable as well," says nikki through the phone. she then revealed another of tsukasa's allies being someone of great hearing.

"ukyo?" senku asks, turning to gen.

"he was a sonar operator on a submarine," explained gen. "he's got insanely good hearing. that's why tsukasa woke him up."

"good hearing you say?" you piped up. "what a useful thing in certain situations. what are the chances we could get him to our side?" you asked senku with a carefree grin to which he just fondly smiles at.

it was then gen realized something after your comment. "y/n-chan, is it true that your family are...?" he trailed off, not sure how to ask and afraid that you'd be offended from him bringing up rumors about your family.

you understood what he was asking, but all you did was chuckle making senku sigh. gen smartly decided not to push any further. he also took your ominous chuckle as confirmation.

"wait," called nikki. "y/n?"

gen smirked. "yes, nikki! we have the l/n y/n on our side! tsukasa and his army may be formidable, but we have the most formidable on our side," he boasted proudly. "as everyone in japan knows, no one can ever beat a member of the l/n family."

you smiled knowingly, feeling a sense of control and pride at gen's comment making senku sigh once more. "can we stop feeding her ego?" he comments

"y/n!" screamed taiju, both as a calling out and a greeting. "are you taking care of senku?!"

"i am perfectly capable of taking care of myself," commented senku with a deadpan.

you howled out a laughter. "of course i am taiju. are you taking care of yuzuriha?" you asked back.

"yes i am!" he answered confidently to which you laughed fondly at.

gen's plan was to just brag about you

but he was not expecting to get something interesting out of this

he thought yuzuriha and taiju didn't know about you

but they do

which just brings him more questions than answers, honestly

when could they have met you?

actually now that he thinks about it, when did senku meet you?

when magma came back after escaping the hands of ukyo, he also relayed the message that chrome got abducted

kohaku immediately wanted to barge in and take chrome back

and she could never forget the humbling moment of when you instantly stopped her

"chrome's been captured by the tsukasa empire!" exclaimed suika in a fits of worry and panic.

"well, what's the plan, twig?" demanded magma towards senku.

a serious look on the scientist's face as you straightened your posture up, standing next to him. kohaku frowned then ran off with her sword in hand.

"kohaku?!" screamed ruri. "she's not going to help him by herself, is she?"

"she's so quick to act," commented kaseki.

"stop kohaku!" kokuyo commanded, pointing in the directed his daughter took off.

ginro looked at the former village chief in aghast. "but how?! there's no one in this village who can catch up to kohaku-chan!"

oh but there is someone.

"y/n." with one simple call from senku, you had already appeared in front of kohaku, disarmed her of her sword, and pushed her against the ground.

all in three seconds.

she was right from the start

she could never beat you

it really is a good thing you're on their side

of all the people he'd expect to be on the other side of this stone world call

he never would have expected you

in fact, ukyo never expected to to talk to you at all

but here he is

being reassured by you, of all people

"—if you promise to produce zero casualties, i'll cooperate with you. but if you kill even one person..."

senku starts cackling at his request. "sounds great! i'm in." gen shrieks at this. "no problem. we've said—" senku turned around to see your hand on his shoulder. he immediately moved away for you to stand in front of the microphone.

"i do not know what kind of person you are, ukyo, but you are naive to think that a war would not have any bloodshed." he freezes. he knows that voice... he knows it too well. everyone in japan knows it too well. "however, i know how senku is. i know that his plan from the beginning were to have zero casualties, and if that's the plan, then i assure you that there will be no bloodshed at all."

"that's gonna be a pretty tough battle!" exclaimed gen after your declaration.

ukyo believed you

he believed you immediately

he had no reason to doubt you... or senku

especially when you supported him that confidently

he feels relieved to know that you're not on tsukasa's side

if you were

then the ground would've been red

tsukasa never expected there to be a phone in the grave of senku

he never expected for some of his allies to turn against him

he also didn't believe hyoga when he said you were revived

but maybe he should've believed him

but at the same time, what good would it be if he had believed hyoga?

tsukasa is sure that no one can beat you

not even the strongest high school primate

"i can save everyone with this paper airplane dynamite," says senku as the nitroglycerin covered airplane exploded upon impact at a tree.

"what the hell was that?!" stammered ginro.

"anyone caught in that would be gone without a trace," commented kinro.

kohaku stared in awe at the leftover the explosion made, then smirked smugly. "human strength is laughable in comparison to the power of science."

senku laughs. "we made it just in time. you held out well, battle team."

"the kingdom of science has just completed dynamite! it has the power of ten billion megaton joules," gen boldly gave out a lie. senku glanced at him calling out for his bold ass lie to which gen defended that senku sucks at negotiating.

"whether i parry it or smack it down, it'll explode. there's no way to dodge a large blast." tsukasa hums. "yes, it's true that we're out of moves, but that would surely cause collateral damage and kill many people. senku, you're incapable of abandoning people. you would never sacrifice yourself either."

"well, well, it looks like we're both stuck. this isn't a victory; it's a stalemate," says senku. "in your eyes anyways." he moved forward and held onto another nitroglycerin covered airplane. "did you know nitroglycerin is y/n's favorite?"

tsukasa froze at the sudden information drop. so it was true? of all the people, why would you be on senku's side? in fact, why were you at this side of the country at all when the petrification happened?

"y/n, no bloodshed remember?"

tsukasa looked behind him to see you standing there with a knife against his throat. he didn't even hear you nor sensed your presence. is this the power you hold as a member of the l/n family? "are you going to take revenge, senku?" he asked.

"no, of course not," senku deadpans. "let's negotiate, tsukasa."

throughout the entire negotiation, you did not move one bit away from his neck

tsuksa knew of your abilities, but seeing it in person was a different experience

he had one question for you though

why do you let senku command you like that?

"what reason do i have to believe you?" he asked senku.

"all you have is my word. i don't lie when it comes to science," answered senku, cooly. "is that not enough?" tsukasa heard you softly squeal at the sight of senku. does senku really have you wrapped around his finger that quickly? no, that wouldn't make any sense. unless the two of you share some history together?

"no, that's plenty."

this would be chrome's first time watching someone get revived from petrification

instead, before that could happen, he revealed some information that he thought was common knowledge

it wasn't

as senku was about to pour the revival fluid, taiju stopped him. "wait senku! mirai-chan's naked," exclaimed taiju as he poked senku's eyes. "no! you can't revive her now!"

senku writhed on the ground in pain, covering his eyes. "here we go again with your absurd nonsense," he managed to let out. "we're in an emergency, in the stone world! who cares if you're buck naked or if your peepee's showing?" he raised his hand up, rubbing his eye to soothe the pain, then removed them showing his teary eyes. "you really like this plot twist, don't you? we'll figure it out once she wakes up—"

"but if it's y/n, would you be okay with it?" senku snapped his mouth shut at taiju's rebuttal. he turned over to you, who's standing next to him, to see a smirk growing on your face. he could already feel the headache coming from this small tease.

you raised your hand and casually revealed, "actually he revived me naked, so..." heads turned to senku who flinched at the sudden movement, all of them looking shocked (sans kohaku, she's actually mad).

"senku!" kohaku roared, drawing her dagger out.

"what's wrong with that?" asked chrome, breaking the tension. kohaku turned her head to glare at chrome who flinched at that hostility.

"chrome-chan, it's bad manners to see someone naked without their consent," informed gen, treating chrome as if he was an innocent child.

"no, i know that!" exclaimed chrome. "but they bathe together, so they see each other naked all the time," he then revealed. heads turned once again to senku, but this time to you as well to which senku sighs and you laugh at.

"and just how do you know that, chrome?" senku asks, then lets out a disgusted face. "don't tell me..."

"no!" denied chrome immediately. "i notice you guys heading towards the springs together a lot and y/n would be carrying a bamboo basket of like these cases and i also saw soap in it, so i assumed that you two would be taking a bath... together." he then realized the implications of what he revealed and turned red.

god bless yuzuriha on making a set of clothes for mirai, breaking the tension.

many things were revealed that night

under the curtesy of chrome

he never thought too deeply about the things he know, but saying it out loud made him realize some things

it made gen and tsuka understand just what of relationship you hold with senku as well (kind of)

and so the question changes

how did you and senku get to that point?

"senku..." chrome called out. "we're missing some dynamite," he shared with a serious tone.

upon hearing that you quickly scanned the area and noticed who are missing, and bolted off. a few minutes later, an explosion rang out, then you heard gen screaming out to the villagers to hurry up.

you snuck up on hyoga, bloodlust accidentally slipping which made him dodge, but barely. a line of blood forming across the back of his shoulder blades. he raised his spear and instead of aiming it at you, he aimed it at mirai. you moved forward, blocking the attack on hitting her. the spear pierced through you, but not as deep as hyoga wanted since you were able to stop it by holding onto it.

"so you're not impenetrable," he mused.

"go fuck yourself," you spat.

you broke the spear in half then pushed it through you, popping it out from the back. you spun around, catching the bloodied half of the spear, then turned right back around, using the momentum to throw it towards hyoga.

"get out of there! tsukasa! mirai!" you heard senku cry out from the distance. "y/n!" then you heard him let out this blood curdling scream.

you lost balance from the powerful throw causing you to slip and fall. tsukasa ran over. hyoga blocked the spear with the other half of it. tsukasa managed to catch you, holding onto your wrist. hyoga quickly picked up the bloodied upper half of the spear and aimed it at tsukasa. you swung yourself forward, your feet flat against the mountain wall and pushed yourself off, pulling tsukasa down with you. hyoga missed his stab, grazing the side of his torso instead. the sudden pull made mirai slip from the edge, but luckily senku caught up and pulled her away from the edge. however, hyoga then kicked senku off the mountain to which he jumped down afterwards.

senku's hands trembled as he held the wound, putting pressure on it. you could feel his fright against your skin, in fact, you're just as frightful as he is. the both of you can't lose each other. he can't lose you; and you don't wanna leave him. tsukasa kept himself busy as he fought against hyoga, but anyone with eyes could see that tsukasa is affected by the cut.

"you need to work with him, senku, i can survive for a few minutes," you managed to tell him as you reached towards your wound, holding it down with two hands. "you two can end this fight just as quickly as it started. we both know how bad water and blood is inside of a punctured lung." your breathing increased.

"save your breath! y/n, please..." senku lowered his head, laying it against your forehead.

"then go and help tsukasa already," you forcefully told him with gritted teeth.

hyoga managed to get his way over to where the two of you were. he kicked you away from senku. "y/n!" he screamed out.

anyone could tell that senku was distressed

it was the most obvious thing

you've been unconscious for barely a few hours and yet he's become restless

the people who know senku well enough are shocked at this newfound side of his

then again at the same time, they weren't shocked

everyone knows just how much you and senku care for each other despite not knowing just what exactly the relationship the two of you hold

(there was assumptions of it, but that's all they were: bold assumptions)

"senku, you need to rest," advised gen, looking worried. "you took a beating as well."

senku shook his head. "what's the point of sleeping when i need to think of a way to save y/n," he replied, pacing in the cave room you laid in.

taiju and yuzuhira glanced at each other, worried for their long time friend. this was not the first time this had happened. they hoped it would be the last, but here they are yet again, watching senku worry upon hours for an injured you.

"senku, do you want to sleep in here?" yuzuriha asked softly. senku looked up at her and nodded, no words to be said.

"i'll get a spare bed for you senku! no worries!" exclaimed taiju as he ran off.

"has he ever been like this before?" kohaku asked, going straight to the point. gen and chrome walked closer to kohaku and yuzuriha.

yuzuriha's lips drew into a thin line, unsure if she should share. she knew about the game you and senku liked to play, after all, she was one of the first victims. "only when y/n becomes reckless and injuries herself, but this time it's worse. it's hard to heal an injury as severe as that in the stone world."

"it's obvious," mentioned gen. "i may not know what relationship they have together, but if my assumptions are right, then it makes sense. usually senku would've thought of something by now, but he hasn't. his mind is being blocked by anxiousness, panic, and worry. he needs to calm down."

"senku..." you weakly called out which caught senku's attention immediately, and crouched down next to you. "get your ass to sleep." the others were taken aback at the first sentence you spoke after you woken up from a short coma.

senku let out a huff of amusement. "of course that's the first thing you say," he mentions.

"you know me so well, love." a weak smirk formed on your face. if anyone picked up on the sudden affectionate name, they didn't mention it. "but seriously though, how can you save me when you can't even think straight. you know me well, but i know you just as well, senku."

senku furrowed his brows.

"you need to accept what you need to do, senku."

masterlist a/n: it's not as ambiguous as i want it to be, but i thought the ending seemed fitting

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groundzerosgirlfriend · 2 days

Text

Traits they would want in a partner:

Senku Ishigami

(This unedited so dont @ me)

Firstly. IF you ever manage to get into a relationship with the man known as Senku Ishigami you probably deserve some kind of award for having to deal with this man’s crazed scientist bullshit every day. He literally doesn’t change one bit, he's still the same Senku that’s blunt, mean, hates physical affection and mushy words. The reward for the least romantic boyfriend goes to *drumroll effect* SENKU!

Senku probably prefers someone that’s he known for a really long time I’m talking since he was at least in junior high but the further back the better and if you were in the science club with him back in high school fantastic. Meeting new people is one thing but actually having romantic feelings for them is a whole other ball game. It’s easier and less work when liking someone who already knows him inside out and vice versa instead of having to do the whole cliché ‘get to know each other’ façade over and over again.

Also, I feel like Senku has only had like maybe 2 crushes in his entire lifetime: one was some famous scientist he saw on tv talking at a press conference at the head of the table in a room full of men and the other one was in his first year of junior high when he was bested at a mathlete competition (in his defense he pulled the most brutal all-nighter the night before while working on some insane project and messed up the placement of a decimal point) by a girl who wore the chunkiest pair of glasses known to man. He quickly got over both as he had learned that realistic the possibility of this famous scientist (who was also married) falling in love with a prepubescent boy was damn near impossible (and illegal) and the girl he liked in school ended up coming out as a lesbian when she and another girl were caught kissing each other's cheek during break time.

Senku probably likes individuals that are independent and self-sufficient like Kohaku (girl boss!!) People that are clingy and to needy are not his forte’ and makes his face sneer or deadpan brutally. He doesn’t like physical affection or words of affirmation on most days he’s more of a quality time (slaving over more experiments with you doing physical labor) and gift giving (making you little trinkets from his science experiments). I mean it’s pretty obvious remember that one episode where Senku’s own dad was about to give a long emotional speech on the record but stopped because he knew Senku would ew at it. So if you’re somebody that thrives off of praise and attention then *opens the door* please see yourself out respectfully because this man is not going to give it to you. You'll be like a little dried up cactus begging for attention.

Senku likes cleanliness and organization. Senku himself is very clean and hygienic. People that are not are usually big turn off and and an even bigger *thumbs down* for him. He’s also organized despite how his experiments and projects seem to be all over the place they’re not. He knows exactly where everything is, the exact millimeter of, every beaker, of every pipette, of every pencil. It's called organized chaos. If one thing is moved without his consent or worse, his knowledge the entire room is thrown off and he has a hard time finding anything for the next 12 hours.

Personal opinion here but I feel like Senku has as dislike for bugs. Like sure. Bugs are cool to explore and on a scientific level sure but anything other than that he’s not really cheering for joy about it. I also feel like he despises getting sick, like literally any type of sickness whether it’s the common influenzas virus or even a slight stomach bug. He’s miserable and irritated and it takes a really long time to get better because although the scientist in him tells him he needs to rest the stubborn workaholic in him tells him he’ll be fine to do a few minutes of work (which ends up turning into hours-please make this man rest🙏🙏). So if you’re the type where you’re unhygienic to the point of constantly being sick or attracting like actual bugs then either you’re going to have pick up the slack on your hygiene or leave realll quick.

Senku also likes people that smart either intellectually or when they’re witty and have a sharp mouth. If they can understand and even better add in their own input when he’s going on and on about different types of minerals sharing his excitement when they make a scientific breakthrough in the stone world he thinks if he didn't believe marriage was a social construction he'd get down on one knee with some sparkly rock he *borrowed* from Chrome's rock collection. Now even if his partner isn’t all into the science *blah blah* cells *blah blah* quantum mechanics and Schrodinger's equation a partner who is sharp on his mouth will suffice jussst as well. It's makes him snicker the tiniest bit turning his head away so no one can see the grin covered on his mouth covered by his hands. People who are blunt and not softspoken are a *big thumbs* in Senku’s book why would someone who has something to say not say it? A waste of time in his head.

Senku likes a willingness to learn even if it's just about they like every now and again. He knows that science is a high broad topic that covers from up into the vacuum known as space or as to the deep as the aquatic volcanoes known in the deep blue ocean. And he knows about it all in that gorgeous brain of his. In Senku's mind everything thing revolves around science, walking-the physiology of cells to tissues, tissues to muscles and neurological brain activity to make voluntary commands, art- the primary colors created by the art starting from things like mud, bugs and fruits, oh chemicals- easy it all starts with the period table of elements starting from hydrogen all the way down to Ogganseon. Anything you like any hobby you enjoy has to involve some kind of science and if you ask some him some questions about how it works or at least how it originates he knows that somewhere in you have the curiosity of a scientist.

Likes athleticism....maybe? Honestly, I'm kind of unsure about this one because on one hand I can see him liking people that are athletic and physically fit not because he thinks that being skinny is better or anything like that but because he can definitely use you like a horse (do yall know like those short mini scenes between the episodes where Senku like dresses up as different jobs imagine him as a farmer with a straw hat on his head in overalls a piece of straw in his mouth and a riding crop in one hand whew😩😩😩) for a lot of physical labor don't worry he'll return your hard work with a treat of your choice but be prepared he will complain about your laziness and wanting to help 'humanity' but on the other hand I could see him liking people that get winded and red faced after walking up stairs or carrying a bucket of water just like he does (extra points if it's a guy like him) because if you're both low stamina and low endurance you can't tease him about his athletic abilities. So a tie maybe.

Lastly, LOVES a strong will and determination he knows that starting the stone world back to modern humanity from scratch is no easy feat hell even he has made a few mistakes while trying to figure himself out. But what he does know is that science is filled with trail and error (mostly error) and it takes a loooot of time before you actually get what you're looking for so if you're the type to give up easily after failing once or twice and turn your back to his goal of turning the world back into the modern society he once had then....I'm sorry to say it probably won't work out for you there's only so many motivational speeches this man can give before he gets annoyed and just lets you give up without any reassurance (don't worry he doesn't take it personal), besides he still has people like Chrome, Sukia, and Kohaku to help.

@instanthideoutsalad I know you said you wanted Soft Boyfriend Head cannons of Senku but I'm so uninspired with those at the moment so please accept my humble offering of this drabble I made🙏🙏🙏🙏. I swear I'll do it soon it soon. 😪😪