No ones pov

Shinsou and Denki were sitting on the couch, watching cartoons while sero was at work. Denki stared at the screen, nibbling at the end of his thumb while shinsou sat on the floor, eating some animal crackers and watching the show. Shinsou has noticed Denki was acting a bit off, he was talking more slowly and stumbling on his words, as well as nibbling on his thumb and chewing on his sleeve. But he didn't question it, he just thought Denki was sleepy or something. After a bit shinsou heard the door open, he ran to give sero a hug but tripped, falling onto his knees. But Denki didn't react, he was to focused on the cartoons. Sero rushed to shinsou "oh baby are you okay?" Shinsou whined and made grabby hands, sero picked him up, carrying him into the living room and sitting next to Denki. Denki glanced over and smiled "I missed ch- you" sero kissed denkis cheek "I missed you too, I'm surprised you didn't rush over to see if our little baby was okay" he chuckled

Denki felt a ping in his heart 'our little baby' he heard Seros voice say, his heart hurt from those words. Wanting them to be different but...he was scared. Sero noticed him staring off into space and tapped his forehead "babe? You okay?" Denki whined and covered his forehead "nu stap" he pouted. Sero frowned and put shinsou down "baby wait here okay?" Shinsou nodded as sero took denki into their shared bedroom. Once the door was locked sero looked at Denki "babe what's wrong? You've been acting a little off today, are you sick?" Denki slowly shook his head "Nuh uh" sero put his hands on his shoulder "babe I can't help you if you don't tell me what's wrong" Denki fiddled with his fingers before speaking "I..I age regress like shinsou does" Seros eyes widened slightly at the news "really? Oh hon why didn't you say anything"

Denki teared up "b-because taking care of two littles can be exhausting a-and" he sobbed "I thought shinsou deserved the attention more" sero sighed softly, wrapping his arms tightly around Denki "oh baby, you know I love you right? I give you guys equal amounts of attention and even then you guys deserve more and more because you both are such amazing beautiful people" sero softly kissed denkis forehead "now tell me all I need to know, so I can take care of you like I do shinsou" Denki smiled wide "I regress to ages 0 through 3, so I can be a lot smaller then shinsou. But I'm pretty easy to keep occupied" sero nodded "okay baby, thank you so much for telling me that! Do you wanna go and tell shinsou?" Denkis heart swelled as he was called baby, he quickly nodded and followed sero out to the living room.

Shinsou was sitting on the couch, the cartoons almost ending as he turned his head, smiling wide "hey guys" he said, making it clear he wasn't regressed at that point. Sero and denki sat next to him, sero put a hand on shinsous knee "babe me and Denki talked, and we have something to tell you" shinsou raised an eyebrow, but nodded.

Denki smiled and began to talk "I just wanted you to know, that I also age regress like you. I was just nervous to say something" he chuckled, rubbing the back of his neck. Shinsou slowly formed a huge grin on his face "really? Babe that's great! Thank you so much for telling" he wrapped his arms around Denki in a hug, shinsou kissed denkis forehead. Pulling away from the hug he asked "do you wanna regress right now? Be our little baby for tonight?" Denki heart felt as though it would explode, tears swelled in his eyes as he finally heard the words he wanted to hear, being said towards him. He nodded happily as sero placed him on his lap, bouncing him. As Denki started to regress, sero and shinsou praised him, squishing his cheeks and babying him with no intent of stopping. "Aww look at our little baby, who's the cutest baby ever" sero cooed, gently tickling denkis tummy

Denki giggled and wiggled around happily, shinsou ended up finding some of denkis supplies hidden in the bathroom. So he brought them over, gently putting denkis paci in his mouth, and wrapping him up in his fluffy baby blanket. It definitely didn't take long for Denki to regress, when asked how old he was Denki held up two fingers. Sero and shinsou squished his cheeks and patted his head, giving their baby boy so much attention he would have exploded. Of course, because it was getting late they all had to lay down eventually. They all went to their bedroom, Denki laying down in the middle of the bed while the two other boys laid next to him. Sero and shinsou wrapped their are tightly around their baby, peppering his cheeks with soft kisses before relaxing into the mattress. The first to fall asleep was sero, followed by shinsou and then Denki. As he fell asleep denki couldn't help but smile, his dreams were finally coming true.