Izuku Midoriya:
Izuku was trying his best to let you say 'Dada' or 'Papa' but nothing didn't came out of your mouth besides gibberish. He sighed and decided to take a break like watching All Might. You stared at the tv and smiled when the All Might said his hero name. You giggled and yelled "All ight!" Izuku's eyes widened and looked at you. You got confused when he hugged you and started to cry
Katsuki Bakugo:
Katsuki was playing with you at the table as he waits for the food to cook. When you accidentally dropped your bottle, you said "Shit." He looked at you and sighed. "Ok, I gotta stop swearing in front of you." He was also kind of proud
Tenya Iida:
Your first word was Dada. You said that when you saw him passed by.
Denki Kaminari:
Denki thought that you were gonna mute cause he tried to teach you how to talk but it came out gibberish. He sighed and layed down. "I'm not a good dad..." Just as he was gonna doze off, you said, "D-Dad?" His eyes widened and sat up, looking at you. "Dad" He started to tear up as he hugged you. "Yes! I'm Dad!"
Hitoshi Shinso:
This lazy ass was too lazy to teach you how to talk so he bought you a toy that talks. As he slept, he felt your little hand pat his cheek. He groaned a bit as he opened his eyes. "Yes Y/N?.." You showed him your toy and showed him a bear. "Bear?" He smiled and patted your head. "Yep, bear"
Shoto Todoroki:
You were already talking up a storm