Eri just sat in her bed silently, eyes following her fingers as she traced the design on the blanket. Then, in a voice so quiet that they almost missed it, she said that this was the first time she had something like this as Izuku asked...

Izuku:A nightlight?

Midoriya asked curiously but Eri shook her head.

Eri:A bed.

Hearing this,(Y/n) looked at the others with concern. Sometime during the day, they had forgotten that Eri never had the best childhood. Being held prisoner by a group of villains, experimented on every day, abused by a man who had no regard for the lives of others...it was a life no person should ever have, let alone a child.

Seeing Eri's saddened look, Midoriya placed a hand on Eri's head.

Izuku:I know you didn't have the best life, Eri.

He said in a soft voice as (Y/n) agreed.

(Y/n):Izuku's Right....Nobody should have gone what you went through. But it's going to be alright. Overhaul is gone, you've been freed, and you are surrounded by people who love and care for you.

EriEven you?

Eri asked the four students.

Ochako:Even us, Eri.

Ochako said with a smile.

Ochako:Our Class will care for you no matter what happens. You'll finally be able to live your life like you should. And we promise that we will never treat you like they did.

Eri:You promise?

Eri asked as Yagyu smiled and let out her pinkie finger and said "Pinkie promise"

Eri locked her own pinkie with Yagyu's and gave the Shinobi a small smile.

(Y/n):It's time for bed...Goodnight, Eri.

Izuku and Ochako already left as Lur Toddler teen leaned forward and hugged the little girl.

Eri:Goodnight, Papa.

Eri said.

Yagyu:Goodnight, Eri.

Yagyu said as she too leaned in and hugged her.

Eri:Goodnight, Mama.

Eri responded sleepily. And with that, she laid her head on the pillow and closed her eyes and As soon as they were sure she was asleep, the four plugged the nightlight into the wall, turned off the lights, and slowly closed the door so as not to wake her as they stepped into the hall and rejoined their Classmates.

(Y/n) couldn't help but smile at how happy Eri seemed to finally have a place where she would be loved. She wouldn't have to worry about anyone hurting her or experimenting on her for their own personal gain. She would be able to live a happy life with Class 1A and Himself being her pa-

He stopped as he froze recalling what Eri called him as Yagyu did the same recalling what Eri called her.

Asuka:Hm? What's Wrong?

(Y/n) Stuttered what exactly was wrong....

(Y/n):Eri.......She Called Me "Papa"

Yagyu:And she called Me "Mama"....

The two answered as the Entire dorm was so silent you could hear a pin drop. Every one of the students were looking at the couple with dumbfounded faces. Even Bakugou took a moment to look up from his history book to look at the two before....

Mina:OH MY GOD!SHE CALLED YOU "MAMA" AND "PAPA"?! THAT'S SO ADORABLE!!!

She was shushed and reminded her that Eri was sleeping as Leon said...

Leon:It actually Makes sense for her to call you that,You are her guardian now after all.

(Y/n):But it feels weird,I mean,I'm only 4!!!I'm younger than she is!

The room was abuzz with whispers as the students processed the news but not from what he said because they still thought he was referring to his Mental age,Not his LITERAL Age since he was a Four year old in a Teen's Body as he said...

(Y/n):And what about what she called Yagyu?

Asia had an answer for that as she said....

Asia:Maybe for both,it's like this....she called you "Papa" Because Your now her legal guardian and As for Yagyu,She's Your girlfriend, so I guess in Eri's eyes, that makes her a 'mama' figure.

(Y/n) nodded, his mind racing with the implications of Eri's words. He had never thought about the possibility of becoming a father, let alone being mistaken for one. The pressure of his new life was already immense, and now he had to navigate the complexities of being a parental figure to a traumatized six-year-old girl. He felt the weight of the world on his shoulders, and all he wanted was to be the hero that Eri deserved.

The next day, classes resumed at Kurosu World High, and (Y/n) found himself juggling his schoolwork with his new role as Eri's "Papa".

The students of Class 1-A were supportive, each one taking turns to spend time with her, helping her to feel more at ease. However, the whispers and glances from the other classes were unavoidable. Some were envious of the attention Eri was receiving, while others were simply intrigued by her tragic backstory and the mysterious nature of her powers.

https://youtu.be/WU6rvQlxDKM

we see (Y/n) as he stares off into space before he turns around and looks at the 4th wall as the title appears in the sky made of stars..

'BIG'

Mada toke kirezu ni nokotta

we switch to the class as they all train and relax for their next battle as we see (Y/n) having his Kurosubasutā as he holds two cards but who's on them isn't shown as eri hugs his leg.

Hikage no yuki mitai na
Omoi wo daite ikiteru

he smiled at eri as she suddenly changed into his Original self before returning to Normal.

Nee, boku wa kono koi wo
Donna kotoba de tojitara ii no

Issei was in His Balance Breaker carrying random supplies as Koneko carried some stuff as well.

Anata no subete ga ashita wo nakushite

Eien no naka wo samayotte iru yo
Sayonara dekizu ni tachidomatta mama no
Boku to issho ni

It shows the Class practicing Music for something as Jiro suddenly ran through with a guitar case.

Mada tokenai mahou no youna
Soretomo noroi no youna
Omoi nimotsu wo kakaeteru
Nee, boku wa kono machi de
Donna ashita wo sagaseba ii no
Ah-ah

Many members of The class are shown making a Candy Apple using their Metahuman abilities before it Bonks (Y/n) on his head as he caught it and smiled before giving it to Eri.

Anata no subete ga katachi wo nakushite mo
Eien ni boku no naka de ikiteku yo
Sayonara dekizu ni aruki dasu boku to
Zutto issho ni

the Class all smile as Eri stood in the center being Held By (Y/n) & Yagyu as it zoomed in on her before she smiled at the 4th wall.

__________________________________________________________________________________________________________

Days turned into weeks, and the dynamic within Class 1-A shifted as students rallied around Eri. They took turns helping her adjust to her new life, creating a nurturing environment that made (Y/N) proud. Yet, whispers of envy and intrigue from other classes lingered, a constant reminder of the complexities surrounding Eri's story and his unexpected role.

Just as he began to find a rhythm, a new challenge arose.

Xenovia:(Y/N), AS YOUR OTHER LOVER, I DEMAND A DATE!!!!

Xenovia shouted one afternoon, her voice echoing through the Kitchen of the dorm because Her jealousy flared as she witnessed Yagyu receiving the spotlight, attention that she too wanted.

The students erupted in laughter, caught in the hilarity of the situation, while (Y/N) stood at the center, his heart racing in confusion. How could he navigate the social maze of teenage love while shouldering the responsibility of being Eri's guardian?

As he glanced over at Yagyu, her face a mixture of shock and amusement, (Y/N) knew one thing for certain: he had wished to be a hero, and now he was in the midst of a wild adventure. However, deep down, he still yearned for the simplicity of childhood, the carefree days of playing without worries.

Caught off guard, (Y/n) couldn't help but smile.

(Y/n):Eri, do you want to tag along?

he asked, hoping to lighten the mood. Eri's face lit up, and she eagerly replied.

Eri:Can I?"

Xenovia sighed but accepted the idea with a smile, realizing she had no choice but to welcome Eri into their impromptu outing.

Xenovia:Okay... I don't mind Eri as our third wheel.

As the three ventured out together, laughter filled the air, and (Y/n) felt a sense of comfort amidst the chaos of his life. In the heart of Union City, surrounded by newfound friends and responsibilities, he began to see that perhaps being a hero meant more than just the power to fight—it meant nurturing, protecting, and creating a safe haven for those who needed it most.

And so, the trio set off on their adventure. The theater was first, where they laughed and shared popcorn while watching a delightful kids' movie. Eri clapped enthusiastically, her giggles filling the air. Then they moved on to a cozy restaurant, where they shared plates of food and stories, looking like a little family.

As laughter filled the air, (Y/n) realized that life, even as a teenager in a toddler's body, had its joys. He was learning that being a guardian wasn't just a title; it was a commitment to nurturing love, trust, and healing.

As the sun dipped below the horizon, (Y/N) reflected on how strange it was to balance being a high school student and a parental figure to a little girl. But in those fleeting moments of laughter and joy, he felt a warmth spreading in his chest. Eri's innocent affection gave him strength, and Xenovia's companionship reminded him that even heroes needed support.

Before they returned to the dorm, Eri dubbed Xenovia her "Other Mama." The warmth in Xenovia's smile made (Y/N) realize that maybe this unusual family dynamic was exactly what they all needed.

As they walked back, (Y/N) couldn't help but marvel at the strange twists of fate. He had wished to be a hero, and while the path was fraught with challenges, he was determined to be the hero Eri deserved. He was still learning the ropes of this newfound life, but he wouldn't trade the laughter and love he'd found for anything in the universe.