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#yeah its a yandere harem lmao poor reader
throwaway-yandere · 2 years
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His Adorable Pen Pal (Yandere!Thoma/Reader)
a/n: thoma is my 16th max friendship lvl character and i really like his vibes. personally, yan!thoma is hard to pull off. Thoma's such a green flag, if this was an otome isekai he'd definitely be the 2nd male lead LMAO– ((and yee, there are some very smol references from past works, they're not important theyre just iykyk moments)). this took longer cause i wrote diluc's part at the same time to try to get the story feel more connected. also, @kardi76 im so sorry please tell me you slept ;;-;; cause there is no closure (lololol).
gn!reader
a pretty reliable synopsis: thoma would do anything to meet you... (so please don't screw it up).
Cw: yandere!thoma. (Thoma is not self-aware that he's yan and thats the best part--) Implied yan!childe and diluc (soldier & king)
Parts:
Soldier, Poet (You are here), King
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If you asked (Y/n) (L/n) who "Fixer" was, they would tell you that he's one of the few people who could understand them deeply.
If you asked (Y/n) (L/n) who Thoma was, well, the best response someone could get from them is "Hmm... I guess the name sounds familiar," followed by "ah, so that's who he is. Okay then."
The two of you have been penpals for almost five years, but neither of you revealed your real names. You addressed him as "Fixer" (a pen name Kamisato Ayato had relentlessly recommended), and he responded to your calls as "Levi" (short for the infamous Lunar Leviathan sea legend). This is not due to the lack of courage or trust, but because you mutually agreed that it would add more mystery and thrill to your inevitable first meeting.
But one of you lied.
Thoma knew exactly what your name was. He knew your height, eye color, family, and a number of other personal facts that a regular housekeeper would not have had the opportunity to learn so readily. Earning your private information was his quota with Lord Kamisato for helping him "burn a few stray leaves", but the given information wasn't the most important findings of their investigation, no.
It was the revelation that (Y/n) (L/n), rather, YOU were his first love.
Thoma would happily take up any attractive label that fit his romanticized viewpoint, be it infatuation or puppy love. You were the kid he frequently spent time with within the Mondstadt public library. Granted, you both often took seats two chairs apart from one another, but the sticky notes passed along the table did not make the distance feel too far. You were each other's confidants. You both didn't belong anywhere and Thoma was bound to catch a teeny weenie crush on you.
It's no secret that Thoma is a hopeless romantic. He believes in his lucky omamori and fortune slips, hence it's not a huge stretch that he believes in soulmates too. No one in the Kamisato Estate was surprised when he preached that it is fate that bonded you two together. Lord Kamisato incessantly teased him for it, but Thoma was none the wiser. He thought that Ayato's remarks about being whipped were a compliment and that only made everyone more keenly aware that he was absolutely smitten. 
Thoma was ultimately determined to reunite with you once more. The two of you lay on the same bed but with different dreams, and Thoma wished otherwise. He wanted to demonstrate to you that, if a "failure" like him could win the hearts of the Inazuman populace, then Mondstadt could also respect you and your adorable eccentricities.
But that won't be an easy feat.
The journey to Liyue was perilous, but it was nothing compared to his first trip to Inazuma. It was a bit funny how most of the ships to Liyue were suspended. Luckily, Thoma never lost hope. He and Captain Beidou came to an agreement whereby she would allow him to board the Alcor in exchange for a thorough cleanup. And hey, when it comes to housework, he's almost as passionate as Beidou's need to see the Tianquan, so it was a true non-zero-sum game.
Going from Liyue to Mondstadt was quite a chore as well. Some mora is better than no mora, and that was his way of coping after dishing out 900 mora to pay a guide and his spouse to help him out. The guide never shuts up. He kept talking about a drunkard friend from Mondstadt while his spouse graciously tried to focus on Thoma's needs. His spouse was clearly forced to marry the man under a contract. The Mondstadter prayed that your future marriage is far from theirs. Thoma's patient, but he doesn't think you can handle hearing about osmanthus wine, or in his case, housekeeping, for the rest of your married life. (The spouse can prepare some delectable seafood, though.)
Thoma considered whether his determination to meet you again was being tested by cleaning the entire ship and listening to an old couple bicker 24/7. At least he's in Mondstadt now, right?
"Excuse me, miss. Do you know where Mx. (Y/n) (L/n) is?"
Thoma was very amazed by the souvenir shop owner's ability to hear him over the talk of other tourists and the clacking of hooves that returned knights from a prolonged expedition. The town square is adorned with proud flags and colorful banners that symbolized the KoF's triumphant return, which meant the grandmaster is home as well.
Since Varka is here then that means--
"Ahh, (Y/n)?" Marjorie tapped her bottom lip. "That ungrateful kid isn't here. They didn't even bother to welcome their cousin home. They're probably sulking elsewhere."
Thoma flinched.
"Excuse me?"
"What's wrong? You do know what kind of person (Y/n) is, right?" Marjorie said nonchalantly.
"I mean, what did you expect? They're a disappointment to the Imunlaukr Clan, so it's only natural that they would shy away from celebrations like this. It's for the best, no one wants a weirdo around to spoil the festival."
His eyes darkened. Thoma's entire focus was on Marjorie now, and he didn't hear a teary-eyed person running for the stairs.
"How do you have the guts to say that about someone?"
Marjorie raised an eyebrow.
"But it's the truth–"
"Just how much do you know about (Y/n)?" Thoma gritted his teeth.
"Have you talked to them before? Have you taken them out for lunch? Do you know how they feel when people talk about them like that? Do you know how hard they worked to please everyone?"
At this point, the noise from the crowd began to simmer down as they tried to eavesdrop on this confrontation. Thoma subconsciously towered above Marjorie, and his hand slammed the door beside her.
His dull green eyes leered deep into her soul.
"N-No?"
"Then you should watch what you say, Miss."
The scent of embers wafted in the air.
Thoma didn't notice it was his own doing until Marjorie screamed. His conscience was stirred by her horrified eyes, and he quickly pushed away.
Heat radiated throughout the shop and Marjorie's arm, but fortunately, it wasn't enough to cause blisters and unbearable pain.
"O-Oh I'm so sorry! I didn't mean to come off that strong!" Thoma rambled on, fearing that he may have crossed the line. He felt multiple stares drilling the back of his head, and that solidified how wary the crowd was. "I'm just saying you should be careful what you say next time! You never know if you're hurting someone already."
Thoma's not the villain here. He's just teaching her a valuable lesson, that's all.
"R-right..." Marjorie whimpered. Her sleeves were nearly burnt to crisp and Thoma's heart dropped at the thought of additional expenses. Still, he's not above paying the price. 
"I'm r-really sorry for the damages!" He blurted out. "I'll pay you back, how much?"
-----
Some mora is better than no mora, sure, but now that latter is starting to sound more like his situation.
Thankfully Marjorie didn't ask for much. Thoma couldn't decide whether to chalk it up as good fortune or the result of being too intimidating. Either way worked out for him anyway, cause he would've tried to haggle the price down if it were too expensive.
Thankfully Marjorie didn't ask for much. Thoma couldn't decide whether to chalk it up as good fortune or the result of being too intimidating. Either way worked out for him anyway, cause he would've tried to haggle the price down if it were too expensive.
But the fact that his emotions got the best of him was alarming...
Did you mean this much to him?
... Who is he kidding? Of course, you do!
Thoma sailed through storms and walked mountains to see you again, didn't he? His protectiveness is just a form of love. Marjorie isn't ill so no harm done, but if the situation called for it he would've undoubtedly escalated it to something more. This type of determination makes him your protector from afar, doesn't it?
"Ugh..." Thoma pouted. "Don't they sell anything other than alcohol here? I can't stomach the smell..."
While looking for a non-alcoholic beverage, he caught a glimpse of a passing slender and tall figure that loomed behind him. His strides were large and the head above his shoulders was etched in a permanently stern expression. The vibrant strawberry hair that crowned his head both contrasted his dim face and signified which family he belonged to–- who he was. It's none other than Diluc Ragnvindr.
Thoma grinned. When you and Thoma had the entire library to yourselves, Diluc used to take care of you two. He had the honor of overseeing two very bashful kids who were three years younger than him. Second only to Lord Kamisato, he was one of the most passionate people Thoma had ever met.
"Hey, Diluc!"
He didn't anticipate anything will happen when he called Diluc's name. The last time they met, Diluc was the nation's rising star, while Thoma was a timid teenager. Diluc may not know him now that Thoma pulled back his golden hair and changed the tone of his voice to one that exudes social lightness.
"It's me!" He grinned and reached out his hand for a handshake. Thoma was a bit nervous. He didn't know if he should be casual with the Ragnvindr heir, but this approach is ten times better than ignoring him. Thoma is not without care for friends. Why wouldn't he greet an old buddy? Especially the kid who played devil's advocate for your shenanigans?
"Th–"
Diluc briefly exhibited signs of fear before clearing his throat.
"Thoma." Diluc bit back coldly.
Thoma hesitantly sank his hand back into his pockets. What was that look for? Did he do something wrong?-- Well, he did almost burn a store down... but it didn't feel like that was the reason behind that face he made.
"I-It's been a long time!" He beamed, joyful that one of the few people who didn't shun him in his childhood still recalled him. "I thought you wouldn't recognize me anymore!"
Diluc hummed curtly. His eyes were sharp, which only accentuated that he hates to prolong whatever conversation this was, if you could call it one.
"I wouldn't dare make the mistake of not knowing who you are."
Thoma chuckled nervously. "Right."
"Is that all?" Diluc huffed.
"Oh," Thoma scratched the back of his head. "How's Master Crepus? I'm old enough now, you think he'll allow me to drink this time?"
He teased quickly before he loses Diluc's attention. It was just a small jest that alluded to the time young Thoma sneaked in inside Dawn Winery, but the look on Diluc's face was indescribable.
One thing was for certain, he was not pleased.
"N-Nevermind, how's Kaeya–"
"Have a pleasant evening, Mister Thoma." Diluc immediately turned his back on him, and his footsteps already drowned Thoma's unpolished ramblings.
"I hope you have fun staying in Mondstadt."
Mondstadt's chatter sounded in a near-endless chorus, therefore confirming that Diluc left the conversation.
He sighed humorously loud.
"Haaaaah... this is one of the most overwhelming homecomings of all time, alright. Maybe it could even top dad's... Wherever he is."
Thoma thought it would be him who would be unrecognizable in both appearance and personality. 
But it seems Diluc changed too. And if Thoma were to be so bold, maybe he changed too much. He wondered how you felt about that–-
Thoma gasped.
Wait...
He opened numerous letters about the toxic people. You often compared a "friend" of yours and the people around "them" to a broke coin collector and a few pennies. Several anecdotes described in detail how the broke coin collector wanted to buy a fresh loaf of bread but was unable to part with their money since they believed it will one day reveal its true value.
The "Fixer" thoughtlessly retorted that "a coin's purpose by the end of the day is to be spent. What good will holding on do if you starve yourself to death? You need to tell the coin collector that their life is worth more than what they've saved."
He grimaced.
He was just trying to sound poetic. Thoma never thought that there was a possibility that one of these "coins" might be Master Diluc Ragnvindr himself.
Thoma crossed his arms and shook his head. It doesn't matter. He could be wrong. Maybe Diluc is just in a bad mood, and it's not like the 'cavalry captain' knows that he's "Fixer". It'll be ignorant to assume that a bright man like Diluc became a toxic person just because of one bad day.
Besides, some mora is better than no mora, and you still have him. And even if Diluc walked out of your life, Thoma will never let you be alone.
So don't worry, okay?
-------
Thoma didn't remember Dragonspine being this cold.
The last time he traversed the bridge towards the mountain was years ago, and he faintly remembers traveling with adventurer Cyrus to collect logs. He resisted the cold back then, but he can no longer say the same now that he's a pyro vision user. His pyro shield doesn't seem to provide any warmth in Dragonspine. Kind of backwards, isn't it? Thank goodness Good Hunter's served hot coffee. It was the only non-alcoholic drink they served this festival. His bottle preserved the comforting heat, and his hands were delighted to hold on to it. It was almost a torch for his vision to light up each time.
He also didn't bring a map. It wasn't in his budget after paying the Goth Hotel extra for his stay which was a major bummer (he doesn't recall the prices being that high before?) but it's alright. You write about the place sporadically that it almost felt like he knew the place like the back of his hand.
"H-hoo… I should've brought extra layers…" Thoma shivered. "Y-You made it sound like Dragonspine wasn't t-this cold at all… Oh, dear… I'm r-really tempted to run on the i-ice now…"
Once he pushed away from the branches of one particular tree, the bizarre trip had all been worth it.
"(Y/n)..."
He knew that who he saw had to be you.
Because you were breath-taking.
But that bliss was short-lived. Something was wrong. 
"--I'm so glad to have met you and the Fishing Association. You didn't know who my family was and treated me like a friend, not a means to an end." 
A crease formed between Thoma's eyebrows and his lips trembled. His face contorted in an ineffable string of hurt and betrayal, and his suffocating grasp on the poor tree beside him burned. 
Your shoulders were drooped and you wore a Snezhnayan scarf, but most importantly, you were confiding in this blue-eyed stranger.
You were confiding in someone else that isn't him. He's your soulmate! He should be the only one you could count on.
The thud of his boots on crusty snow stopped Thoma from threading farther. That sounded too loud. If he moved a little closer, they'd hear him. And he can't afford to look like a stalker.
Thoma gulped harshly. He should've prayed that his first meeting with you wouldn't be spoiled by some filthy man he didn't even know.
What are you doing?
That spot was supposed to be for him.
Who is that man?
When you started running and the stranger followed after, Thoma walked to your camp and picked up his unopened letter. His letter sat near your plate and other discarded items.
You didn't even read it before talking to that stranger. Did that man matter more than him?
He tucked it away and smiled sadly.
You're not ready to know his feelings just yet.
But don't worry! You and Thoma will fall in love when the time is right.
It's fate, after all! He just KNOWS it!
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