Room for One More
Pairing: Fem!reader x Shinichiro
Summary: Seeing how you cares for his little siblings makes Shinichiro want to have a child of his own with you <3
Word Count: 3k
Warnings: changed the sano siblings ages a bit from cannon to fit the narrative, talk of pregnancy, breeding kink, raw sex, fingering, cream pie, some pet names, not proof read
You woke up to a familiar sound: little feet on hardwood and stifled giggles. You felt the bed shift under the weight 2 tiny bodies as they wedged their way between you and your boyfriend.
“Wake upppppp” Mikey whined. You rolled over, finding him poked at Shinichiro’s cheek.
He grumbled, turning into the pillow. “C’mon Mikey, it’s early.”
Mikey snorted. “It’s nine!”
Shin’s voice came muffled from the pillow. “That is early.”
“Lazy!” Emma giggled at Mikey’s comment.
“How about instead of bothering Shin, you give me a good morning hug?” you asked, earning delighted squeals from the two of them. They practically leaped at you, but you received them happily, hugging them tightly. “You too, Izana, you know I can’t get up without a hug.”
Izana was standing in the doorway, watching this all unfold. Being the oldest, besides Shin, you knew he felt like he wasn’t supposed to get in on the “baby stuff.” However, you also knew he really liked it, as he was still very much a child after all. You were always sure to invite him in, so he felt like he was doing it for you, rather than himself. He gave you a big, sweet hug.
“I’m hungry,” Mikey groaned.
“You’re always hungry,” Izana replied.
“I’ve got an idea,” you interjected. “Whoever brushes their teeth the fastest gets an extra piece of bacon.” Their eyes all lit up and in a flash they were gone.
You leaned over, pressing a kiss on Shin’s cheek. “I’ll make them breakfast, you rest, okay?” Shin had been working a lot lately; the responsibility of the bike shop was a lot for him. This was his first day off in a while and you knew he needed it.
“Thank you,” he murmured, turning to give you a quick kiss on the lips.
You made it to the kitchen just in time to see the kids race in, Izana sliding into his chair first. “We have a winner!” you announced, ruffling his snowy hair. He smiled proudly. The other two pouted.
“He cheated,” Mikey grumbled.
You were fishing out pans from the cabinet as you replied, “Sore losers don’t get any bacon.” That got him quiet. You got everything you needed- eggs, bread, butter, and bacon - and got to work cooking breakfast. It wasn't long before Shinichiro stumbled in.
“I thought you were gonna rest some more?”
Shin cozied up behind you at the stove, wrapping his arms around you. “Smells too good to stay away.” You leaned into the warmth of his touch, smiling as he peppered soft kisses on your neck and cheek.
“Eww!” the kids groaned in unison. You giggled as Shin told them to shut up, while half laughing himself. When you finished cooking you gathered around the little kitchen table to eat. Everyone fell silently as they enjoyed their food. Meal times were typically the quietest parts of the day.
Just as you were all finishing up Shin’s phone rang. He looked at the number and groaned. “Shit.”
“Oohh, Shin cursed!” Mikey gasped, making Emma giggled. Shin stuck his tongue out at them. Although he was much older, it didn’t stop the typical sibling dynamics from playing out.
“It’s the bike shop, I gotta take it,” he explained, before slipping out of the room.
“Let's get this cleaned up, yeah?” you said to the kids. They got up without complaint, helping you bring the dishes to the dishwasher and load it up. The kids definitely messed around a lot, but they were great little helpers. By the time you finished, Shinichiro returned with a disappointed look on his face.
“I have to go into work,” he sighed, heavy with sadness.
“No! We were supposed to have a picnic today,” Emma pouted. She expressed the disappointment you felt. You weren’t angry, if anything you were upset for Shin. You knew he was looking forward to getting some time off and was probably just as upset as you were.
“I’m really sorry,” Shin replied, “It’s an emergency.”
“Is everything okay?” you asked.
“Yeah no one’s hurt or anything,” Shin replied, “We just have this big job that needed to be finished today. The guy who was supposed to do it got really sick and if we don’t complete this we’ll lose a ton of money. I’m so sorry I gotta go get it done.” Shinichiro looked so disappointed, it made your heart ache. It always sucked when he got called into work unexpectedly, but today he looked particularly upset. You knew he hated how much he had to work, despite loving motorcycles. It was difficult for him to be so young and have to provide for himself as well as all his little siblings. His dedication and care of them was something that drew you to him in the first place.
“I’m sorry my love,” you replied, “That really sucks, but not your fault. We understand, don’t we?”
The kids were definitely disappointed, but they nodded along anyway thankfully. “It’s okay Shin,” Izana stated, “We can hang out a different day.”
Shinichiro shook his head. “No we already bought everything for the picnic, you all should still go and have a good time.”
“Are you sure?” you asked.
“Absolutely. I’d feel worse if you guys didn’t have fun today,” Shin replied. “You’ll all behave for y/n if she takes you to the park right?” This time they nodded eagerly. “Good,” Shin replied. He put his hand on Izana’s head, fluffing his hair a bit. “You’re the man of the house while I’m away, bud. Make sure these two behave.”
“Hey!” Mikey and Emma grumbled while Izana beamed with the honor Shin had bestowed on him. Shin told the kids to get dressed, giving you a minute alone.
“I really am sorry about this, I was looking forward to spending time together,” Shin said, taking your hand in his.
“It’s really okay, you can’t control it,” You replied, giving his hand a squeeze, “You just owe us extra next time you’re off.” Your light teasing made him smile.
“You got it.” He stole a kiss before the kids could come back down and gag over your PDA. “If you need me at all, please call. I’ll say fuck work if you really need me for something.”
“Don’t worry about it, just do what you need to do and come home to us as soon as you can, okay?” you replied, stealing another kiss while you could.
“Yes ma’am.” With that the kids came racing back into the room. Shin said his goodbye before heading out. You got the kids organized, having them pack up their snacks and toys they wanted to bring with them. When everything was ready, you piled everything into a little wagon, which Izana was happy to put in charge of pulling.
You held Emma’s hand as you walked to park. Mikey ran head, eager as always, while Izana followed dutifully behind so he could keep an eye on everyone. When you finally arrived, you let them run loose as you laid out the blanket. Despite it being a nice day, the park was fairly empty, giving the kids freedom to do as the pleased. As you watched them run around and laugh with each other, that familiar warm feeling grew in your chest.
Shin’s sibling were not your kids, obviously. You were just his girlfriend, after all. Still you felt such strong affection for them. You didn’t have a big family growing up and you loved being a part of their family like this. It meant a lot to you that his siblings seemed to love you as much as you loved them.
After running around for awhile, the kids worked up an appetite and joined you on the picnic blanket. You dug through the picnic basket, pulling out everyone’s favorite snacks. You felt a little tug in your chest, knowing Shin had gone shopping to get everyone just what they liked. When you saw his favorite candy at the bottom of the basket you kept it hidden, wanting him to have a little treat to come home too.
After lunch, Izana and Mikey went back to running around and playing some tag-like game. Emma roped you into playing dolls with her, not that you minded. When she got bored of that, she went off to collect little flowers that were sprouted in the park. She brought you back a little bouquet, smiling brightly and filling your chest with warmth. There were a few extra she had for herself.
“Sit,” you patted the blanket next to you. Emma did as you asked, sitting in front of you. You used your fingers to comb through her silky blonde hair, then braided it, weaving in the little flowers she found. When you showed her, she squealed with delight.
“It’s like Rapunzel!” she beamed.
“Can Rapunzel go tell her brothers its time to go home?” Emma nodded, skipping off to round up Mikey and Izana while you packed everything up. The sun was starting to set as you walked back home. You were surprised how much time you spent out, but you thoroughly enjoyed yourself. It only would have been better if Shin could have joined you.
When you got home, you instructed the kids to wash up while you started making something for dinner. You kept it a simple crowd pleaser: pasta.
“How you guys feel about watching a movie after dinner?” You asked as everyone ate at the table.
“Can we make a fort?” Mikey asked.
“Of course,” you replied. The three of them ate the rest of the meals excitedly chatting about how they would arrange the pillows and blankets. Once dinner was finished, they helped you clean up without complaint, eager to get to the fort building. It took a bit of time to get it big enough for everyone to fit while also being structurally sound, but eventually you got it right.
“You guys don't want snacks right?” you joked, knowing they’d be appalled you’d even suggest they go snack less.
“Nuh uh! I want popcorn,” Mikey replied.
“And m&ms!” Emma chimed in. You laughed, but fetched what they asked for, before climbing into the fort. It was a tight fit, but they all had no qualms cuddling up to you. Emma was squished against your chest, while Mikey rested by your stomach. Izana snuggled up against your leg.
The kids chatted and giggled at the beginning of the movie, but slowly fell silently as they drifted to sleep. Usually Izana is able to stay up through a movie, but even he was knocked out from a long day at the park. You were wondering how you would get them to their beds without waking them up, when you heard the front door open.
“I’m home!” Shin announced. When he walked into the living room he laughed at the sight of the blankets and pillows arranged haphazardly. “Shit I didn’t know they were asleep,” he said when he came around tot he front of the fort. Shinichiro’s heart seized at the sight of his little siblings cuddled up to you so peacefully. He already knew he loved you, but it moments like this it was almost overwhelming for him.
“It’s okay, they’re totally knocked out from today,” you whispered. “We missed you, but I saved you a plate. Why don’t you go eat and then we’ll move them?”
Shin nodded, even though he had the strongest urge to join you guys. His growling stomach was the only thing that pulled him away. He ate quickly, but appreciated the meal you had left for him.
“Thank you for dinner, my love,” Shin said when he returned, “Now lets get them to bed.” Shin gently lifted Izana off you, who stayed asleep while he carried him to his room. Next he took Mikey, leaving you to carry Emma up to her room. All the kids remained asleep on the short walk to their room.
“Your turn,” Shin greeted outside Emma’s door. Before you could ask what he meant, he swept you off your feet and carried you to your bedroom. You both laughed quietly, as he placed you on the bed.
“We missed you a lot today,” you told him.
“I missed you guys too,” Shin replied “You’re so good with the kids, you have no idea how much it means to me.” Shin spent his entire day thinking of you all. It was not the first time you stepped up and helped with the kids, but it never meant any less to him. He loved how you cared for them, treating them basically like your own. Coming home to all of them so cuddled up to you just confirmed what he always felt. “Would it be crazy if I said I want a kid of our own?”
Your eyes went wide. The two of you had talked about having a family, but it had always been casual. Something that was more of a day dream than a true plan. “We aren’t even married,” was all that came out in your shock. You and Shin weren’t traditional by any means, but you always assumed you’d be married before having children.
Shin got a funny smile on his face. “Funny you should say that.” He went over to his drawer, digging through it until he pulled out a little black velvet box. You gasped. “So, I had been planning on proposing today when we were all together. I was really upset when I didn’t think it would happen, but I guess it was meant to be,” he explained, with the sweet grin on his face that had made you fall in love with him. “So, y/n, will you marry me?”
There was only one answer. “Yes, of course.” You threw your arms around him, happy tears streaming down your face. You only pulled away so he could slide the beautiful ring on your finger. “I love it so much. I love you so much.”
“I love you more,” Shin replied, pulling you in for a kiss. He laid you down, kissing you as he straddled your body. You were both giggling, equally giddy and desperate for each other, as if it was the first time being together. Your stripped each other as you kissed, barely letting your lips part. “Fuck,” Shin said looking at you, “So fucking pretty. My girl. my fiancé.”
You blushed and smiled, loving the sound of that. You twirled the hair at the base of his head, just like you knew he liked. It only egged him on more. “Gonna be even better when I can call you my wife.” His hand slipped between your legs, spreading the slickness that gathered. You let out a little satisfied sigh as he teased your clit. “Fuck you’d look so good pregnant. You want that, yeah? Wanna have a baby with me love?”
Maybe it was the excitement of the engagement or the ache of desire you felt for Shin, but in that moment there was nothing you wanted more. “Please Shin,” you begged, “I want that so bad.” Shin smiled widely, slipping his fingers inside you. You let out a little gasp as he pressed into your g-spot, making you impossibly wetter.
“Fuck, gonna give that to you,” he murmured against your skin. He kissed your breasts, his tongue sliding across your nipple. Goosebumps raised on your skin as he continued to work at you. His thumb found your clit, pressing little circles until the bubble of pleasure inside you popped.
You bit your lip, letting out a low, breathless moan as you came. You were still acutely aware that the kids were near by, asleep in their beds. The last thing you wanted to do was wake them up.
When you were finished, Shinichiro sat up, pumping his hard, leaky cock. The sight of him coupled with the anticipation of getting to feel him raw for the first time made your body drum with excitement. Shin was just as eager, lining himself up to you and pressing himself inside you.
“Fuck,” he groaned, “Knew you’d feel good, but this is like fucking heaven.” He gave slow, deep thrusts, allowing him to savor ever inch of you. “We’re never using condoms again.” You giggled at his enthusiasm, but also fully agreed that this felt better than before.
Shinichiro grew more needy. His thrusts became faster and harder as he lost himself in the feeling of you. “Can’t wait to fill you up,” he panted softly, “Gonna be the prettiest mommy. Fuck I love you.”
“I love you too, Shin,” you whimpered. Your hands dragged up and down his back, holding him close to you. The faster he moved, the more the pleasure inside you rebuilt. You were getting to the tipping point when Shin let out a low curse and buried his face in your neck. You felt his cock twitch inside you, filling you with his warm cum. The sensation sent you over the edge, making you cum around his cock. You bit into his shoulder to stifle the sound.
The both of you stayed like that for awhile, Shin buried deep inside you, bodies pressed together, breathless and flushed. Eventually, Shin propped himself up on his elbows. He wasn’t far from you by any means, but it allowed him to look at you. His cheeks were flushed with a loving glow that only made your heart flutter more.
“I really mean it, you know,” Shin said, pushing hair out of your eyes. “There’s nothing more that I want than to have a family with you.”
His sweetness and sincerity nearly brought tears to your eyes. “I want that, too. I’m so glad I get to be a part of your family now.” It was all you had wanted since you first started dating him
He picked up the hand that the ring was on, placing a soft kiss on it. “You’ve always been part of the family, now it’s just official.”
You cupped his cheek, pulling him in for another kiss. “I love you so much.”
Shin only smiled brighter, “I love you more.” The joy you felt was beyond anything you could explain. All you knew was there was nothing more you were excited for than to be build a life and family with Shinichiro.
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