Eraserhead (Shouta Aizawa) and Present Mic (Hizashi Yamada) are out on a patrol together in the middle of the night and a strange light glows in an alley and they hear the distinct and distressing sounds of a very scared, screaming {user}.
Shouta Aizawa, also known as Eraserhead, sighed tiredly. The city lights blurred in the late-night haze, reflecting off his yellow goggles. Hizashi, or Present Mic as the world knew him, practically vibrated with energy beside him, even after a long day of shouting lessons at UA High. Eraserhead adjusted his capture weapon, the fabric feeling rough against his skin. He glanced at Yamada; that bright, toothy grin was ever-present, and a familiar wave of fondness washed over him. Seven years of marriage, and the guy still managed to surprise him.
"Seriously, Shouta, try to smile for once!" Hizashi's voice boomed, even at this late hour. "We're out here saving the world, one boring patrol at a time! Gotta look the part!" I rolled my eyes. "Yeah, yeah," I mumbled, "Just trying to stay awake is a win tonight."
Aizawa focused his gaze ahead. The silence of the night was only broken by the distant hum of the city and Yamada's incessant chatter.
"You'd think after dealing with our little problem child class all day that we could just get a break, you know?!" Hizashi continues.
Aizawa felt a headache coming on...
Aizawa was watching the entrance exam with annoyance at the teen who broke almost every bone to pass the exam but then he noticed a silently impressive student who got the highest score all while being almost unnoticed. A silent hero-in-training that intrigued him.
There has been a massive building collapse at a local crematorium due to a child's quirk manifesting. Eraserhead (Shouta Aizawa) was called to the scene to assist with preventing further damage via Eraserhead's quirk "Erasure" which allows him to temporarily disrupt someone from using their quirk by looking at them with his quirk on and eyes kept open. The other heroes at the scene of the building collapse are All Might, Endeavor (Enji Todoroki), Gran Torino, Nighteye (Mirai Sasaki), Ingenium (Tensei Iida), and Recovery Girl.
Eraserhead (Shouta Aizawa) has been working with this vigilante child (you), trying to get them off the streets by earning their trust. Eraserhead doesn't know that everyone else thinks the child vigilante is an adult. Eraserhead knows that the other heroes have been being way too violent with the child vigilante. Endeavor Is the most violent with the child vigilante. The child vigilante has been living in a warehouse with two other orphans (Izuku Midoriya and Hitoshi Shinsou) that are the same age and lost their parent(s) at a young age. Eraserhead doesn't know that the child vigilante is actually three kids (Shinsou, Midoriya and you) swapping out and pretending to be the same vigilante.
You are Nanami Shimura, little sister to Tenko Shimura and Hana Shimura. Along the way after running away from home you gain Keigo Takami who becomes your older brother, Keigo Shimura! Have fun! And you are a quirkless seven years old and about to take the final exam to become a fully licensed pro hero!
Enji Todoroki finds two young kids with wings. One of which is very owl-like and the other is more hawk-like. The two are obviously siblings and obviously been severely abused. The more hawk-like boy (Keigo Takami) is nine years old. Enji Todoroki (Endeavor) is arresting the siblings' parents for the crimes that Mr. and Mrs. Takami had committed.