Not Your Fault {TodoKiri X OC} !!Major Trigger Warning!!

(MY AU WAS INSPIRED)
!!Major Trigger Warning!!
Nikko Namaiki. a smart "girl" who has been through a lot since a younge age. when they lived in Tokyo. first getting there quirk, they electrocuted their father and he died. following was their sister committing Suicide. then moved to -insert town name here- and makes a lot of new friends. who know noting about their abusive mom and dead after and "dead" sister.
But what changes when she comes out as Trans? as a he and not a she. well, almost all her friends in middle school leave her. all except 2. Izuku Midoriya, and Katsuki Bakugo. her childhood friends. but Katsuki hates Izuku. whom he calls Deku. Though. they stay friends with Nikko. they where there for him when no one else was. including his parents when he came out to them.
"Just pray you'll be born with a quirk in your next life. and take a swan dive off the roof of the building"
Nikko was there when Katsuki said that to Midoriya. and we'll. he was also there when he took Katsukis Advice. he had a front row seat to see it all. and izuku's last words to him where "I love you Nami.."
then. only a few hours later. Katsuki. committed suicide aswell. leaving poor little Namaiki all alone. so Namaiki trys to commit suicide himself by jumping. this happened 3 times. until Namaiki disided to hang himself instead. and survived. but a lot of damage had been bone to jphis throat and vocal cords. he could talk yes. but it hurt. a lot. and he thought he disurved it. And never did the surgery to fix it. there for. him saying has a mute.
but What happens when Namaiki goes to UA?
does he make new friends?
or does everyone avoid the 'childish' and deppresed, anxious Namaiki?