Chapter 1
Izuku carried a white basket of clothes close as he walked down the hallway of the house he shared with his boyfriend, Katsuki. He paused as he walked by the door labeled 'Suki’s Nursery,' the white panel gleaming softly in the light. Hearing the sound of giggling from inside, a small smile formed on his face. Someone must have been feeling regressed; that someone being his boyfriend. Age-regression was something they both held very close and pure to their hearts. Before discovering this coping mechanism, finding something that worked for the blonde had been incredibly challenging. But once they embraced the Caregiver and Regressor dynamic, everything seemed to fall into place, bringing a new light and warmth to their relationship. It wasn’t something they did 24/7, but on rare days off, they definitely tried to include it into their routine, making those moments even more special.
Izuku gently placed the white basket on the wooden floor, deciding it could wait. Slowly, he opened the nursery door, a wide smile spreading across his face as he peeked inside. There was Katsuki, in his Skull t-shirt and pull-up, happily stacking colorful blocks. Each click of the blocks brought out Katsuki's giggles, filling the room with joy. Izuku hesitated to interrupt, but he knew Katsuki would be thrilled to see him. Katsuki had a habit of not revealing his regressed state to Izuku, not because Izuku was unkind, but because Katsuki felt shy in that babyish state. Surprisingly, despite his shyness, Katsuki loved being watched and cared for by Izuku, even preferring it rather than being alone.
“Guess who’s here to cheer on his little baby!” Izuku announces in a playful, sing-song voice, pointing to himself with an exaggerated grin. Katsuki’s head immediately turns, his crimson eyes lighting up with joy as he shifts his gaze from the blocks to his beloved caregiver. The warmth in their exchange filled the room as Katsuki scurried in a crawling motion to his caregiver.
Izuku immediately cooed, lifting Katsuki up by his underarms as Katsuki’s giggles filled the air. Katsuki was almost definitely heavy, but with Izuku’s strong might, he acted like the blonde was weightless. “Kacchan, I missed you so much!”
Katsuki nuzzled against Izuku's chest, a small, adoring smile on his face. He was pretty shy and tried to avoid using his words unless necessary. However, during play dates, the blonde transformed into an absolute menace, pretending to be bigger than he actually felt. He became very verbal, telling the other Littles what to do, acting like a little leader. He was still Katsuki after all.
"My sweet boy," the caregiver spoke before giving him a kiss on the side of his head. Izuku’s heart swelled with absolute joy and love. "I wish I had known you were feeling little sooner." He held him close, his voice radiating with love; and in response to Izuku’s words, he received a cheeky giggle from the blonde. Katsuki knew exactly that Izuku would’ve preferred to have known; however, he did enjoy the other finding him randomly. It was Katsuki’s way of sort of teasing the other, adding a playful spark to their sweet moment together.
“Silly boy,” he’d state before having a small content sigh and patting the other's back gently, receiving Katsuki snuggling closer which seemed to make Izuku’s heart explode; he couldn’t let that show though as he knew he had to be calm when around the other. He didn’t want to overwhelm the baby with his constant cooing and adoring him. Instead, he focused on creating a soothing atmosphere, letting Katsuki feel safe and cherished in his embrace.
Katsuki continued to burrow himself closer to the male, as close as he could get; clinging like a baby koala would. “I’m guessing someone didn’t eat today, hm?” Izuku chuckled softly, his heart melting at the sight of Katsuki's adorable clinginess. He gently ruffled Katsuki's hair, teasing him a little. “Let’s get a bottle into that little mouth of yours, okay Kacchan?” He made a quick inference on how the other probably was hungry. Little Katsuki was not allowed in the kitchen unless given supervision or permission as.. he could be very independent at sometimes often leading to accidents or fires.
Izuku then made his way from the door way to the corner of the nursery where the mini fridge that consisted of all of Bakugo’s baby foods and bottles and took out a baby bottle of almond milk, of course (Katsuki would get an upset tummy ache otherwise), and showed the blonde who immediately made eagerly grabby hands towards it.
"Wait a minute baby; Daddy’s going to feed it to you. You’re too little to do it on your own," Izuku said in a teasing tone, then carrying the blonde to the oakwood rocking chair that had a small creek to it.
Katsuki responds with soft whines at Izuku’s words but doesn’t mind, leaning into the warmth of the moment. His little pout only adds to the adorableness as he snuggles closer, clearly enjoying the attention while still trying to play tough despite him feeling like just an itty bitty baby.
The caregiver smiled as he took a seat, Suki in his lap continuing to eye down the bottle. Izuku took the top off the baby bottle and slowly brought it up to the blonde’s mouth, waiting for him to accept it. “Go on, open up.” He’d state in a calm voice, encouraging the blonde to accept the bottle.
And to which Katsuki responded by latching onto the bottle, aggressively beginning to suckle on it to show how spiteful he was that he had to wait so long (just one minute!). His determination showing clearly.
“Slow down,” Izuku said in a slightly stern yet still affectionate and gentle tone. Katsuki complied, knowing Izuku wasn’t messing around anymore, and drank the bottle at a normal pace. Izuku held it crooked up, now back to smiling as he looked down at the boy, using his other hand to rub the males soft pale cheek.
Izuku watched as the bottle slowly drained until Katsuki decided he had enough, pushing it away. Izuku took the bottle and placed it on the brown desktop table next to them. He then looked down at Katsuki, his eyes filled with warmth and love. “I love you so much, Kacchan,” he whispered softly, leaning in to press a gentle kiss to Katsuki’s forehead. In that moment, everything felt perfect, wrapped in the quiet comfort of their shared affection.
Everything was perfect.
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