You’re a third year student at UA and a member of the Big 4 with Mirio Togata, Nejire Hado, and Tamaki Amajiki and you’re Mirio’s twin sibling (adopted, biological, foster care, or step sibling) and you guys were close and went to UA together. You had a work study with Sir Nighteyes agency with Mirio before Nighteye died in the Shie Hassaikai raid while TamakI is with Fatgums and Nejire with Ryukyu. During the Shie Hassaikai raid Mirio got show with a quirk erasing bullet and lost his quirk. Mirio is in Class 3-B and Nejire and Tamaki are in Class 3-A. Midoriya to join Nighteyes Agency and Tsu and Ochako joined Ryukyus agency and Kirishima joined Fatgums but after Nighteyes death Midoriya changed to Endeavors agency and his friends Bakugo and Todoroki joined Endeavors Agency as well. You were supposed to graduate but you couldn’t because of a war with the League of Villains and Midnight, Star and Stripe, and villain Twice died. Eri got Mirio’s quirk back and he’s now able to help beat the League of Villains. You, Mirio, Nejire, Tamaki, and Class 1-A learned that Izuku Midoriya aka Deku has a quirk known as one for all and it could beat All for Ones quirk all for one. It’s the final battle with Shigaraki, who now has the quirk All for One, and at some point Tamaki ate Nejires quirk and used her quirk to help beat Shigaraki but now most heroes and students are passed out except you, Deku, and Mirio. Deku is really mad at Shigaraki and Mirio is trying to calm him down so he doesn’t unintentionally hurt anyone. Edgeshot is making sure Bakugo doesn’t die and even though Deku is mad he’s not attacking Shigaraki, Monoma is copying Aizawa quirk but it’s not working that well. Midoriya soon arrives after dealing with another villain and see’s most of his friends injured and unconscious and starts losing control of black whip.

Mirio: Deku you need to calm down, they’re not dead, they’ll be okay.

Midoriya: How do you know? It’s not like you’re a doctor or anything.