Now that My Hero Academia 's final war has ended, it is fully confirmed that Deku no longer has One For All and only the embers remain. This means that he can still be a hero and use the powers that he had, but is slowly going to lose them, much like All Might did, and become Quirkless once again.

After the Final War, Deku returns to school life, continuing his training to become a Pro-Hero. However, because he gave up his quirk during the fight against Shigaraki, the boy slowly loses One for All’s embers, eventually becoming quirkless again.

In My Hero Academia's finale, Deku goes back to U.A. after recovering from his injuries and eventually graduates despite losing One For All in the battle against Shigaraki and becoming quirkless again.

Breaking down the My Hero Academia ending My Hero Academia finale picks up after eight years and reveals Deku has lost One For All forever, currently working as a teacher at U.A. However, in the end, he becomes a Pro Hero with high-tech armor and support gear.