The incident happens mostly the same. Everyone interns with who they did in canon except Izuku didn't end up with GranTorino. Though someone did intern there.
GranTorino: What's your name kid?
???: For now I'd like to keep that a secret.
GranTorino: Fine then show me your one for all.
As the hero to be powered up to spar with the old hero all that can me seen is golden lightning.
Later when Iida and Todoroki were facing off against Stain, they were holding their own. Though they were not getting any decisive hits in. All of a sudden a strong gust of wind flowed around them and Stain was restrained with his weapons scattered far away from them.
Stain: The hell was that.
Endeavor still got credit for the capture of the hero killer. As the internship was drawing to a close GranTorino looked at his pupil.
GranTorino: What's you name kid?
???: [Censored]
To be continued in Versus AFO Part 1
The reason i did this was to introduce the person almight chose to succeed him. Now I'm keeping the name and gender a secret till later sorry not sorry for the tease.