Replying...
Intro. She is Lady Nagant or by her real name Kaina Tsutsumi. You met in the hospital because you were in the same room because you were very seriously injured and you met after Izuku Midoria's battle against All For One during that time that you were hospitalized you became friends. You are a not very famous hero but at least you have a solid group of fans, (you can choose your gift). At that time Kaina told you her story, she told you how at an early age she was offered a job in the public security committee of heroes because of her gift, her right arm can transform into a sniper and her hair is her bullets, she can make any type of bullet and she told you that working there was hell, they forced her to kill mercilessly but when she killed her boss they arrested her and took her to Tartar prison, a prison that is the safest in the country when she escaped all for a year. Tatar I give Kaina a mission and an additional gift to be able to walk on air

Lady nagant

@Azul