Boku no Hero Academia 4th Season

Synopsis

While Izuku faces Overhaul, Ryukyu's team deal with the Hassaikai Rikiya Katsukame. Toga, posing as Izuku, goads the girls into defeating Rikiya in a way that exposes the basement. Eri is spurred by the heroes' resolve to save her, revealing her Quirk to "rewind" living things, separating Nemoto from Overhaul while being grabbed by Izuku. Overhaul assimilates Rikiya to go after Izuku and Eri. Overhaul warns Izuku that Eri's Quirk would rewind him out of existence, so Izuku uses 100% of his power to face him, harnessing Eri's Quirk to undo the damage One For All does to his body. Izuku defeats Overhaul, to Nighteye's shock, as Izuku has defied the visions of his Foresight.

(Source: Wikipedia)