Episode 71

Tamaki Amajiki arrived at a new middle school on the first day of spring term, fumbled his introduction, and decided no one would want a friend that awkward. The boy who spoke to him first was Mirio Togata. Years later, as the raid opens, he hopes he can burn as bright as his friend does.

Above ground, Kesagiri Man, Mr. Brave, and the rest of the lesser-known heroes keep the yakuza crowd off the police. Sir Nighteye leads the rest inside while Eraser Head explains the ferocious loyalty binding these families together. A concealed panel yields to Foresight, which shows Nighteye the correct code and opens the way down into a labyrinth.

More thugs surge up from below, and Centipeder and Bubble Girl put them down fast enough for the group to keep moving. A wall blocks the maze; Mirio slips through with Permeation and confirms it was thrown up in a hurry by Overhaul's Quirk. Deku and Red Riot smash it open only to hit another obstacle, because Mimic has juiced himself with Trigger and fused with the structure, warping the corridors into something impassable. Tamaki despairs, Mirio steadies him and goes ahead alone, and Mimic, unable to touch him, lets him go.

The floor opens beneath the rest and drops them into a chamber where three of the Eight Bullets wait: Yu Hojo, Soramitsu Tabe, and Toya Setsuno. Fat Gum squares up, but Suneater says the three are his, buoyed by Mirio's example. Mimic turns his attention to the police upstairs. Recognising a stalling tactic, Tamaki insists the others push on. Eijiro wants to fight together, and Toya provokes them into attacking. Larceny strips the officers' guns, Eraser Head kills the trio's Quirks, and when they draw weapons Tamaki binds all three in octopus tentacles, crushes the weapons, and orders Fat Gum to take everyone forward. Eraser Head suppresses their powers a moment longer and tells him to be quick.

Eijiro leaves unhappy. Fat Gum answers that Suneater is the strongest fighter they have on hand right now, and that a weak heart never stopped him from reaching The Big 3. If the boy says he has it, that is enough. The fight goes badly at first. A blade concealed in Toya's mask shears the tentacles, Hojo's Crystallize erupts across his body to break the hold, and the clamshell Tamaki readies is stolen outright by Larceny. The three declare that even trash has pride and come at him.

Hojo's punch is caught in octopus muscle braced with crab shell. Remembering Mirio inventing the name back in middle school, Tamaki declares himself Suneater, a man who can swallow the sun, and answers with Kraken, the Ultimate Move he calls Vast Hybrid Chimera, sweeping shell-armored tentacles across the room and burying Hojo and Toya. They shout for Soramitsu, whose jaws devour anything and whose stomach digests it instantly, and he eats the tentacles whole. Poison fails, Toya tears away what is left, Hojo capitalises, and the teamwork pins Tamaki to a wall.

The trio explain their bond: Overhaul took in men the world had discarded and gave them purpose. Tamaki understands bonds perfectly well, having been carried by one his whole life, and turns their coordination against them. Chicken claws flick a crystal shard into Toya's eye, and having eaten a crystal himself, Tamaki blocks Hojo's strike with crystal of his own. He seizes him with a giant crystal-hardened chicken leg reinforced by octopus muscle and hammers him into the other two, ending the fight. He tells them he cannot understand where their bonds came from, only that friends do not use each other, because friends do not eat friends.

Sir Nighteye cracks the hidden entrance with Foresight, and Mimic uses Trigger to merge with the underground passages and split the raid team apart.

Mirio pushes ahead alone toward Eri, immune to Mimic's interference thanks to Permeation.

Tamaki defeats Yu Hojo, Soramitsu Tabe, and Toya Setsuno single-handed, debuting Kraken and finally embracing the name Suneater.

Eighth episode of the fourth season, adapting Chapters 139 through 141.

Joi Irinaka is shown injecting Trigger, something the manga only implies at this stage.

His true appearance is also revealed here, well ahead of the chapter where the source finally shows it.