Season 4, Episode 11 of Boku no Hero Academia (titled ) is widely regarded as a definitive moment in the series, centering on the selfless heroism of Mirio Togata during the Shie Hassaikai raid. Key Plot Developments
: In one of the show's most emotional sequences, Mirio continues to fight Overhaul hand-to-hand for several minutes after losing his powers, holding him off until Deku and other heroes arrive. Boku no Hero Academia 4th Season Episode 11
: To protect Eri from a quirk-erasing bullet, Mirio intentionally takes the hit, resulting in the permanent loss of his Permeation quirk. Season 4, Episode 11 of Boku no Hero
The episode marks the climactic confrontation between Mirio and Overhaul as they fight for custody of Eri. Mirio intentionally takes the hit