Soon enough, it was time for the heroes and class 1-A to find (Y/N) and save them from the villains. It wasn't long after Aizawa first announced that the heroes knew their general location because the pros assumed the League of Villains would use the teleporting ability to get to the city faster. The students sit in their hero suits as they are all separately transported to the city in other pro's cars.

In most, it's completely silent. But in Aizawa's car, sits Bakugo, Midoryia, and Shinso. Eri wanted to come, of course. However Aizawa wouldn't let her. A mission like this is much too dangerous for her.

"Do you think (Y/N) actually wanted to stay with them?" Shinso questions Aizawa.

"No." He replies plainly, and sighs, "I don't think (Y/N) ever wanted to be a bad person. Otherwise, why did they come to UA in the first place? They wanted to escape All for One and Shigaraki. Ever since they attacked Midoryia, Mic has had doubts that they wanted to be a hero or escape their original father. But I—I don't think that could ever be true. They care about everyone at UA deeply, they had to have been planning something to trick them."

"How did you all even discover the phone call between the Liberation Army and League of Villains?" Midoriya questions.

"Actually, it was an anonymous tip from someone who was a telemarketer. We couldn't track their phone or IP so whoever they are remains a mystery."

"(Y/N) had to have sent the tip." Shinso mutters.

"Yeah, there's no way someone would get word of that in such a low-populated area." Bakugo points out.

"That's exactly what I was thinking."

As they approached Deika City, everyone participating in the mission to capture members of both the League of Villains and the Meta Liberation army, along with (Y/N), had a quick debriefing.

The Rescue team sets up quietly around the front area of where the fight is happening. Jiro and Shoji are on lookout duty, using their stealth and abilities to find (Y/N). The rest of the heroes are gathering at the back area, near where the Meta Liberation's tower is. Their ambush begins immediately, and chaos insues.

"No sign of (Y/N) yet." Jiro says, tapping their earpiece.

"Why would there be?" Bakugo yells back, "If they are back at adulthood, we have no idea what they looks like."

"Well, (E/C) eyes and (H/C) hair should be enough for us to suspect her. Keep an eye out for any copies of quirks. Like if someone uses our quirks." Midoryia says.

So the team covers the first area of where the fight began but there's nothing but dead bodies or unconscious villains. No sign of (Y/N).

Or so they thought.

"Guys, look!" Shoji yells, pointing, "There's a burn there."

"What's so special about a burn?" Bakugo mutters.

"It was made by electricity.." Midoryia replies, rubbing his hand over the black mark on the pavement. "And from what we know.. there's no other person here except for (Y/N) and Kaminari that have an electric-type quirk."

The classmates glance at each other and immediately start moving forward. They spot other electric scars on the pavement, so they follow them. Eventually, they have to hide behind the rubble of a building as they approach where the fight is happening.

The League of Villains, specifically Shigaraki, Twice and Dabi. Toga and (Y/N) are nowhere to be found.

"Okay, (Y/N) protection squad, you continue the search on the right. The rest of us will go to the left." Iida orders.

"Wait, that's the name for our group?" Shinso questions.

"Yeah.." Midoryia mutters, "Ashido told me to call our team that."

The purple-haired boy rolls his eyes and the two groups head out.

(The (Y/N) protection squad consists of Shinso, Midoryia, Aoyama, Ashido, Bakugo, Uraraka, Jiro, Yayorozu, Kirishima and Todoroki.)

The main group of class 1-A searches high and low but finds nothing. On the other team, with the protection squad, they notice a villain alone. Toga Himiko. She's bleeding and is extremely injured.

Play Lit (Koe no Katachi) by Funguypiano

"(Y/N), are you sure?" They manage to say.

As soon as their name is said, they steps out of an old shed, holding health supplies. They smile at the villain. They looks to be about twenty-years-old with perfect skin and (E/C) eyes. Though, their arms and legs seem to be beaten up from all the fighting.

"Of course."

As Midoryia tries to adjust himself to get a better look, he snaps a twig. The group panics as (Y/N) and Toga turn in the direction of the noise. (Y/N) immediately starts glowing with electricity as they turn.

"Who's there?" They ask sternly, "Come out so I don't have to zap you out."

Reluctantly, the squad decides to do so.

With wide eyes, (Y/N) drops their defence and runs straight into their arms. The group incircles her, with happy tears flowing from their eyes. They smile at them before glancing back at Toga, who's obviously shocked and too injured to move or run away.

"I'm assuming you're here to rescue me?"

"Uh—yeah." Midoryia replies, blushing.

"I can't exactly leave Toga behind like this. So, she'll be coming with us—obviously to the police." (Y/N) frowns, "Though Shigaraki and the others will surely be coming back soon.."

"Let's just get moving quickly, then." Yayorozu says, "The pros are fighting the villains and the Meta Liberation Army so we should have a good distraction already."

"Stealth it is then!"

Quietly, the protection squad tells the others that they'd found (Y/N) and to meet back at a remote area where drivers and cars were laid out in case a quick escape was needed. They're driven back to UA High where they change into school uniforms and wait for the pros to come back.

In the meantime, (Y/N) explains everything.

"So basically, you disobeyed your father's order by sparing a hero..." Midoryia mutters.

"And he punished you by turning you into a baby..?" Iida continues, "Shame on him! I don't blame you for running away."

"I was surprised I was even taken in," They respond, "From our perspective, heroes were the cause of society's fall. We were raised to hate them and only do what we could to overthrow them and fix the world. But now.."

They turn, grinning widely at the (now younger) kids, "I learned from you guys that it's not true. Thank you all. I don't know where or what I'd be if I didn't come here."

After more and more explanations, the other heroes arrive. Aizawa and other UA staff come in last. At that moment, (Y/N) is in the bathroom.

"Where are they?" Present Mic asks in a rush.

"Please tell me you were able to find them." Aizawa adds.

"Yes, they're in the bathroom at the moment, sir." Iida replies.

As their name is said, (Y/N) steps out from behind the corner.

Silence fills the room as the two dads and (Y/N) herself stare at each other. Tears immediately come to both parties eyes as Aizawa feels his heart smile as he stares at the older version of his adopted child.

"Hey dads." They grin, rushing forward into a hug with both of them.

Cries of joy and happiness ring out as the family is reunited. Eventually, Shinso also joins them.

"We have some news, honey." Aizawa says once the hug is over, "Shinso is now your brother, as well."

(Y/N) chuckles, hugging their new brother as everything seems to go back to normal or even better than before.

"And, a new sister."

Everyone glances down to see Eri with a red face and tears in her eyes. They cry out to (Y/N) and grabs onto their legs. The big sibling picks her up and tosses her in the air, giving her a giant bear hug.

"I missed you, Eri." They say, kissing her forehead.

"I missed you too, (Y/N)!" The little girl responds, sobbing.

Eventually, the day after (Y/N)'s return, Nezu holds an assembly for them.

"Weeks ago, the much loved toddler, (Y/N) was captured by the League of Villains during a training lesson. We searched and finally located them. However, a new development has arisen."

(Y/N) steps out on stage, "I'm (Y/N)! Basically, I was only a toddler because my father turned me into one as a punishment. I'm actually twenty-years-old so that's why I was able to control and understand all my quirks and abilities. I'll be back to normal from now on and will actually be working here as a teacher in the future. Thank you for the offer, Nezu, sir!"

The principal smiles, nodding towards them as they step back off stage.

"They has also requested that, despite their age or occupation, they would still like to be referred to as (Y/N). Thank you for your time, have a great day!"

Slowly, everything went back to normal. (Y/N) became a teaching assistant for a while, joining each class and helping the teachers or the students. They fought many battles in the process, and was able to earn themselves a Heroes License thanks to an offer.

But happiness couldn't last forever.