After the Quirkless Izuku Midoriya meets All Might, he becomes the successor to All Might's Quirk, One For All, which means he must eventually go up against All For One and Tomura Shigaraki.
One For All is power inherited to 
defeat All For One, so to speak.
.وان فور أول قوّة تُورّث لهزيمة أول فور وان، إن جاز التعبير
One For All wurde weitervererbt,
um All For One zu schlagen!
One For All
One For All
Le One for All
Il One For All è sostanzialmente un potere
tramandato per sconfiggere All For One!
O One for All é o poder herdado
para derrotar o All for One.
Один-за-всех — это сила, которая
наследуется для победы над Все-за-одного.