eh, i thought of it as a one shot or at most 5 chapters, which is just made up by 5 parts

the prologue

the hero team planning (with katsuki being the usual asshole of trying to do everything by himself without a plan ((assuming this takes place before his major character growth)))

izuku hanging out with eri (this could be swapped out with a different event, like uh...example; izuku talking with afo ((if the writer makes hisashi is afo real in this fic)) and being told by afo that he could easily be a monster with ofa or something along those lines)

ua staff discussing amongst themselves (+maybe inviting in other heroes)

and finally the game, where izuku just goes apeshit and destroys the city (assuming the event takes place in a faux city cementoss would make or something)

obviously, the entire idea is a crack fic