You're 4-5 year old
================================
Aizawa has taken you with him to U.A High. He wanted you to be more comfortable talking with others so he thought it would be a good idea to take you with him to work.He walked into the classroom with you in his arms. Everything got quiet and everyone in the room looked at you and your father with confused expressions.
You are very shy and introverted so you hide your face in the crack of your father's neck.
He stood in front of everyone and started to speak "Everyone, this is my daughter, Aizawa Y/n. She is going to be here that whole day so make her feel comfortable... Otherwise..." he gave them all a glare, especially a certain grape haired boy who shivers out of fear.
"...You're going to regret it" he continued.
"Yes Mr. Aizawa," they all said. You started to look around the classroom to just lock eyes with an ash-blonde boy and red eyes.
He looked at you with a confused and calm expression but looked angry when he saw Aizawa looked at him as well.
"Papa, can I sit with him" you whispered so just Aizawa heard, he looked at Bakugo, giving him a glare but then looked at you and sighed
"Why don't you go and ask him yourself, Y/n," he said and sat you on your feet, you hide behind his legs, making the girls look at you in awe.
You took a deep breath and started to walk at Bakugo's direction. All eyes were on you. Some of them smiled at how cute you are and others just looked at you with an emotionless expression.
You stood at Bakugo's desk, looking up at him "C-Can I.... s-sit w-with... you?" You asked. Your question caught everybody off guard but Mina and some other girls soon squealed at your cuteness.
Bakugo looked shocked, he thought you would go to Deku or Shitty hair or anybody but him. He looked up at the teacher that nodded at him. Bakugo backed his chair a bit and lifted you up so you sat on his lap.
Everybody stared at you two but looked fast away when Bakugo gave them a glare.
Mr. Aizawa started the lesson, Bakugo took notes while you listen to your father's boring lesson. You laid your head on Bakugo's chest, making the hot-headed boy smile, no one noticed.~~~~~~~~~~~~~~~~~
The next lesson was with Present Mic and Aizawa has asked Bakugo to take care of you while he was at a meeting.
"Baku bro, I didn't know you were good with kids," Kirishima said, walking up to you two. You looked away from him, hiding your face in Bakugo's chest, a little scared to not have your father there.
"What did you say shitty hair?! Leave her alone!" He yelled angrily at him. Kiri sweat dropped but smiled at you. He held out his hand for you to shake it "My name is Eijiro Kirishima. Nice to meet you Y/n-chan" he said, you looked up at him shyly and shook his hand hesitatingly. He smiled and walked back to his seat after seeing Bakugo's glare.
You jumped when the door slammed open and Present Mic walked in.
"Hello, class...!!" He yelled you hide your face in Bakugo's chest again while he comforted you by rubbing your back. Present Mic stood in the form of the class when he saw you
"Oh, Hi Y/n, what are you doing here?" He asked, you looked at him shyly with tired eyes, showing him that you needed your eye drops.
He nodded and took out your eye drops that Aizawa gave him. He winked you over to him, you obeyed and he gave you your drops. Everyone looked confused
"Why did you gave her eye drops?" Mina asked as you walked back to Bakugo.
"She has the same Quirk as Eraserhead so her eyes are exactly like his but she taking eye drops so they don't show the tiredness and get sore like her father's," Present Mic said and started the lesson while you walked back to Bakugo.
~~~~~~~~~~~~~~~
"Okay, so can you translate this sense?" Present Mic asked, looking over to everybody in the class. He looked at you, knowing that you can answer because he had reached your English at home.
"Y/n, do you know the answer?" He asked, your eyes widen as you looked at everyone to see them looking at you. You looked back at Present Mic to see him smile at you and give you a nod. You sighed and answered.
"I-I don't c-care what you d-do so just sign the p-papers" (A random sentence) you stuttered out and Present Mic smiled at you.
"Correct," he said and continued the lesson. You sighed and laid your head on Bakugo's chest.
"I didn't know you could English, kid" Bakugo whispered in your ear, you smiled up at him.
"He and papa have taught me at home" you whispered back. Bakugo gave you a rare smile and looked back at the Present Mic.
~~~~~~~~~~~~~
The school was over and Aizawa had walked into the classroom to see you sitting on Bakugo's lap, laughing and smiling.
Everyone stood around you, talking, and adoring your small form.
Aizawa smiled behind his scarf and walked up to you. "Papa!" You said happily and jumped down to the floor hugged his leg, making everyone look at you in awe.
Aizawa gave everyone a nod and they ether way walked to there desks to talk or walked home.
Bakugo stood up and grabbed his bag, he was on his way out from the classroom until you hugged his leg, making him stoop walk and look down at you.
"Thanks, Bakugo" you whispered so he just heard you. He ruffled your hair and giving you a kind look. You walked back to your dad.
Aizawa picked you up and looked at Bakugo and nodded. Bakugo looked away and nodded back and walked out. You yawned and laid your head on Aizawa's shoulder. He smiled at you and walked out of the school with your sleeping form in his arms.
You smiled in your sleep, Aizawa smiled as well, knowing that you are over with being so shy to strangers. Especially with Bakugo.