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The Full Treatment

Summary:

Izuku and Katsuki really want you to be small. As small as you really should be. You're hesitant, but agree to indulge them for just one weekend.

Chapter Text

“We don't have anywhere to go this weekend.” Izuku began after class on Friday. You nodded absently. A hand reached to take yours, give it a little squeeze. You beamed up at Katsuki, enjoying feeling his hand in yours.

“Might be nice if we could all have a weekend together.” Katsuki hinted.

“We almost always do.” you pointed out. “Did you have something special in mind?” they looked at each other and then at you. Izuku took your other hand.

“I have something I want to show you.” he simply said. You decided to follow along. Whatever it was, couldn't be too bad. You were walked into the dorm, your bag taken from your shoulders, your coat slipped off. Izuku took off his own shoes and then knelt down to help you off with yours. You blinked at him, confused.

“Snack?” you asked, longing in your voice as you passed by the kitchen.

“Later,” Kacchan promised. He seemed as excited as Izuku to show you whatever it was. You went with them to the elevator, giggling a little at how excited the taller boy was. You barely noticed when you started swinging the hand you were holding. You didn't catch on that you were holding Kacchan with both your hands, playing with his fingers and arm.

“Come on, love.” Daddy cooed, coaxing you off the elevator, towards his room. You were walked through the hall, humming softly. You didn't catch the care takers giving each other a relieved smile over your head.

“Close your eyes,” Kacchan said suddenly. You did so, giggling when he covered your eyes with his palms. You let him walk you into Daddy's room, nearly bouncing on your toes with anticipation until he dropped them.

“Surprise!” Daddy chirped, waving his hands towards the corner. He had taken down some of his All Might posters, moved some of his merch. Standing there was a lovely white crib, with pink bedding, and a filmy little canopy. There was even a mobile attached to the crib. The thing that made your stomach twist was that it was sized for you.

“Why did you do that?” you asked bluntly.

“What do you mean?” he froze. “I did it for you. Is it bad? Do you not like the color or something?” he looked at Kacchan, swallowing hard.

“We can get a different canopy. And different bedding, if you like.”

“But look, sweetness,” he picked you up, still standing in shock. “We already put Sam in there, and your blankey. You could snuggle right in and have a little nap before supper?” he offered. “And later tonight, I'll sit with you in the rocking chair, and you could maybe have a bottle.”

“I don't—put me down!” you snapped with such firmness that Daddy did put you down. “I don't need any of that. Why did you do this?” you demanded again.

“I though you'd like it. I'm sorry, honey.” he blinked, looking a little heartbroken. Kacchan was confused.

“Now listen here, short stack. Daddy got that for you and put it together during lunch and study hall. For you.” he snapped. “You could a least say thank you.”

“I didn't ask for it!” you snapped back. “I don't want to sleep in a crib. I'm not that Little!” you insisted.

Okay, this had blown up in their faces. You were standing there, hands in fists, ready to stomp your feet. You were breathing hard, trying to remain calm.

“You are, and that is okay.” Daddy said slowly. “You know that we love you no matter what. Sweetness, you fight going down. It isn't good for you. You never give yourself a chance to relax into it. You know the whole point is for your mind to get a chance to process everything without throwing you into a tail spin.”

“No one understands better than me the point of my head space.” you countered. You were backing towards the door.
“You just like when I'm tiny so you can tell me what to do and I can't complain or fight back!” you accused.

“That ain't true!” Kacchan snapped. He stopped and took a deep breath, then went to sit on the bed.

“Fight back? What do you mean by that?” Daddy asked quietly. “What is it about this that is upsetting you, baby girl?”

“No, don't call me that right now.” you insisted. Daddy just waited for you to speak. You whined a little. “Can't we just drop it?”

“You know we can't.” he said gently. “This is obviously a problem for you. We need to work on it. You can take a moment to take a breath, the conversation needs to happen.”

“Come sit with me.” Kacchan said. You walked over and climbed into his lap. He wrapped his arms around your waist, your cheeks pressed together. Neither one of hem prompted you, or even spoke. Kacchan kept his hold on you, letting you work through whatever was in your head.

“I can't be small like that.” you finally said. He rearranged you in his lap, your back to his chest. He was holding your hands still, rubbing he backs of them with his thumbs.

“Why not?” Daddy asked simply.

“Dangerous,”

“How come?” he asked with a frown.

“Can't... Can't run away.”

“Do you want to run from us?” Daddy had moved down on one knee in front of you. You shook your head. He hummed and let his knuckles rub against your cheek.

“No! No no, stay with you.” you assured him.

“So why does it matter?” you were quiet for a few more moments. “Can you tell me, sweetness?”

“Other people,” you mumbled. “Like before...”

“When you lived with your biological family.” he guessed. You just nodded, looking miserable. “Oh honey, I know. I'm sorry hat was he life you had before we met you. I wish I could go back and change it all for you.”

“We're here for you now.” Kacchan gave you a little squeeze. “We wouldn't let someone hurt you like that, baby. I know it's hard for you to believe, because you have reasons not to believe. But it really is the truth.”

“You've only dropped as far as you really need when something terrible happens. I hate seeing you pushed that far.” Daddy admitted. “Can we just try it?”

“What would that look like?”

“Just for the weekend.” Daddy said. “Just... be tiny. We will feed you, dress you, bathe you, clean you. Relax. Maybe if we do this, maybe you won't have to be pushed to the point where everything is hard for you.”

“And if I hate it?”

“We take down the crib and don't say anything else about it ever again.”

You thought about it. This felt like such a big, permanent step. No going back. A crib, a fucking crib. You bit your lip, chewing hard before you felt Daddy thumbing it out of your mouth, pressing a pacifier in instead.

“Okay?” he whispered. You nodded. He beamed at you, scooping you up from Kacchan and giving you a big kiss on the cheek. He bustled to the dresser, grabbing a few things and then whisking you to the bed. Your clothes were taken off and you were laid down.

Before you could think too hard, a diaper was laid underneath you, powder sprinkled around your bits, and you were taped in. You went to cover your face, when your hand was caught. Kacchan kissed your palm and then nuzzled it against this cheek.

“Brave girl,” he praised. “My brave girl.”

You were put in another footed onesie, soft and warm. It already made you feel a little fuzzy. This one didn't have a hood, though. Daddy stood up with you, swaying with you a little bit. He laid you down in the crib, handing you Sam and covering you up with your blanket.

He reached up and wound the mobile. So many mobiles played tunes that made you cringe. This one was softer, gentler. You watched the little stars spinning, unaware that your caregivers had left the room. When had you agreed to a nap? But you had Sam, and the crib was comfortable, and you couldn't tumble out, and the mobile made your eyes heavy...

When Kacchan came to get you for supper, you were still asleep. Both your arms were up by your head, your pacifier still in your mouth. He looked at you for a moment, resting so comfortably in the darkness. He approached you slowly and peeled off your blanket, easing Sam from your grip.

You made an unhappy sound. He bent and picked you up, carrying you against his chest as he went downstairs. The common room was as bustling as it always was on a Friday night. You woke up and grumbled behind your paci, rubbing at your eyes.

“Yeah, I know, rowdy extras.” Kacchan kissed the side of your head. “It's okay, baby. You can sit with me.” he parked it at the table, leaving you in his lap until you seemed a little more coherent. Then he put you in your own chair, buckling in the booster seat. It even had a plastic tray. Some shredded chicken was put down, along with green beans. Daddy sat on your other side.

The other caregivers were melting at the look of you. You didn't see to notice, taking out your paci to eat some of the chicken, and a chomp a few green beans. You were doing more playing eating, but that was to be expected.

“Is baby allowed a piece of cookie?” Sato asked, absolutely smitten with you. You looked up at him and beamed.

“A small piece,” Daddy said. Sato broke off a part and handed it to you. You squealed a little, your legs kicking in your chair as you munched on it.

“How did you make such a small cookie into such a big mess, kid?” Kacchan grumbled as he wiped you off. You kept trying to turn your face from the wash cloth, eventually batting a him.
“Ugh, fine, be a crusty mess.”

“Oh Bakugo, leave her be, she's just a baby.” Ochaco smiled a you, pleased when you smiled back. You were released from the chair, set on his hip. He adjusted you once or twice, then put he pacifier back in your mouth.

“Where are you going?” Todoroki stopped him on the way to the couch. “It's your nigh for dishes.”

“I have a baby,” he pointed out.

“So what? Maybe I want baby cuddles.” he held out his hands. Kacchan grumbled swear words under his breath as you were handed over. Daddy had mentioned needing to get some laundry done. You were brought to the couch, sitting to face Todoroki.

Your hands were clean, at least, he thought to himself, as you reached out to touch his hair. You didn't grab or pull, just let your fingers run through it. You traced down his face, pausing at his burn. The very tips of your fingers traced the edges of it before you leaned forward and pressed the shield of your paci to it, like a kiss.

“Well, you're even more dangerous like this than when you're normally small.” he sighed. He let you continue to touch his face, listening to your interested little hums.

“Are you pestering Todoroki?” Daddy appeared.

“No,” the other boy answered for you. Still, you were plucked off his lap and into Daddy's arms.

“Thanks for sitting with her. It's time for her to get cleaned up and put in some nice comfy jammies.” he sing songed. “Tell 'Roki night night.” he picked up your hand and made you wave. You were given a wave in return and taken to the elevator.
“Let's get you into a fresh diapey and then some warm jammies and you can have a nice warm bottle.” you blinked a him then snuggled into his chest. He cuddled you closer, taking you to his room and going for the supplies in the dresser.

When had you peed? You whined when he unzipped your outfit and set it aside. He made shushing sounds as he untaped you and wiped you, throwing out the soiled mess and sprinkling more powder and taping you into a thicker one.

“It's nothing to be upset about.” he assured you. “You're tired, huh? Nap wasn't enough. You need a more regular napping schedule, don't you?” he poured a little lotion into his palms, rubbing your calves until you calmed down.
“There you go, good girl. Feels nice, huh? Little massage for my baby?” he mauvered you into another fleecy set of footie pajamas.

“We really need a bottle warmer.” Kacchan grumbled as he stepped in. He arranged himself on the bed and grabbed the pillow just for bottle feeding and made grabby hands for you.
“Hand her over, damn Deku.”

“All right, Kacchan, here,” he settled you in the blond's arms. Kacchan relaxed once the bottle was in your mouth and you were taking slow, lazy drinks. He patted your thigh as he rocked from side to side ever so slightly.

“Long week, huh, baby?” he murmured. Your eyes only fluttered. “Yeah, us too.”