Izuku's backstory usually depends on version. However the most common follows the start to the original story, with Izuku being born Quirkless and being bullied and discriminated because of it. Katsuki Bakugou also contributes to this with his bullying, as well as nicknaming him Deku. This leads on until Deku then meets All Might like he did in the original. However, instead of the Symbol of Peace seeing Deku's potential and raising him to be his successor, All Might instead, rejects Deku.