(BTW Busou Shoujo Machiavellianism will exist here and Izuku attended it as a highschool and UA is a college and Uraraka Doesn't exist and Izuku and Amou are childhood friends who like to fight each other and izuku will be a singer just after he finishes Highschool ok ok :) )
so yeah
Enjoy
The backstory of Highschool
everything will be similar to canon except Izuku trained before, has the Spirit Bullet same as Nomura in the Anime, he met All might the same, He cleared the Beach in 2 months and he inherited OFA and started training with Grand Torino for 5 months so yeah he has over 60% of OFA mastered and he has Black whip, and Float so yeah and he has black hair and yellow eyes because why not
So after Izuku finished training with All might
Izuku: Hey all might I might transfer to this school for a high school since they have the best Chances to go to UA
All might: OK YOUNG MIDORIYA I'LL ASK THE HEADMASTER OF THE SCHOOL TO ENROLL YOU THERE
Izuku: Thank you all might!
ALL MIGHT: ANYTHING FOR MY SUCCESSOR AND SON
(All might married Inko in this and she isn't fat)
Izuku: Yeaah Thanks, Dad!
As they laughed and went home and all might went to the headmaster of the school to enroll Izuku there and she accepted so yeah
Five Swords POV
Rin: Well everyone I have called you here because we have a new student attending this school and we need to correct him
Hanasaka: Guii well he has a really high record and he seems peaceful
Satori: Huh well let's see his name is Izuuuukuu a da te
???: It's Izuku
Tsukuyo: poui well what do we owe the pleasure Empires
???: Hahaha well I just came to warn you of his abilities so be careful
Rin: well ill teach him and correct him even if it takes everything Amou
Amou: haha well just be careful
Amou thoughts while walking away: we finally get to meet again my love hehe
as we see Izuku walk into the school
Izuku: well I hope this will be worth it
as he walks in and sees this
Izuku thoughts: WHAT THE ABSOLUTE FU--
as he kept walking trying to ignore it as he saw the girls being armed