To desperately halt the effects of the Quirk-Destroying Drug, Eraser Head cuts his leg off. Despite this, Shigaraki manages to reach his face, slicing one of his eyes, just as Shoto appears, who had been following Deku and Bakugo, blasting him with a mountain of ice, and further knocked back by Deku. With Eraser unconscious, his Quirk is undone, and Shigaraki begins to regenerate all of his injuries. Meanwhile, the evacuation team overhear of the mass destruction caused by Gigantomachia as he makes a reckless beeline directly toward his master; the rest of the U.A. students in Gunga can only look on in fear at the devastation left in his wake. Shigaraki prepares to finish everyone off, only for his body to suddenly split open, realizing that he was awakened too early. Deku figures out that, just like him, his body can't withstand the power of All For One. At this moment, Deku unlocks the Quirk of the 7th user: Nana Shimura's Float, and combined with Blackwhip pulls Shigaraki into the air and rescues his companions. He proceeds to duel Shigaraki in the air alone while the Heroes recover on the ground, causing Bakugo to get anxious. He recalls a conversation with All Might during their training prior where Bakugo voiced his worries regarding a mystery of one of the One For All users, and admitting his bullying of Deku came from not understanding his unselfish and self-sacrifical attitude. While Deku unleashes the full power of One For All to overwhelm Shigaraki, even despite the damage on his body, Bakugo and Shoto get Endeavor into the air, so he can finish him off for good with a Prominence Burn. As he burns alive, All For One's voice calls out to Shigaraki, his body suddenly releasing an array of Rivet Stabs to knock Endeavor away. "Shigaraki" shoots several Rivets out toward Deku, but with no hesitation, just like Deku did for him before, Bakugo blasts forward, pushing him out of the way and getting stabbed instead.

A Hero rides on a plane making his way toward the battlefield. Shoto rescues Deku, Bakugo, and Endeavor from falling, who are all shocked to see Shigaraki still standing, refusing to listen to All For One's words to retreat. Nejire and Iida arrive to warn the others of Gigantomachia's incoming rampage, with the former assisting Shoto in fighting Shigaraki, while the latter helps escort the injured heroes away. Meanwhile, Ochaco and Toga continue to fight in the abandoned house. Toga reveals she was able to use Ochaco's Quirk and was able to kill someone using it, which horrifies her. She also realizes that Ochaco also likes Deku, leading to a scuffle over his Christmas gift to her. Ochaco tells Toga that if she keeps disrupting people's lives she will have to face the consequences, which she responds with tears in her eyes. Tsuyu appears to help Ochaco, but Toga is able to escape, with Ochaco wondering why she started crying; with her answer, Toga prepares to reunite with the League. Gigantomachia finally arrives to Shigaraki's location, and reclaims him just as he's knocked unconscious by Shoto and Nejire's attacks. Dabi then unveils himself on the beast's back, washing the dye out of his hair and revealing his real name: Toya Todoroki. At this same time, Skeptic hacks into all the televisions across the country broadcasting a confessional from Dabi, revealing his lineage as Endeavor's oldest son, and his abusive past all in the pursuit of power. Endeavor and Shoto are horrified by the revelation, as Dabi gleefully takes joy in the airing out of all the dirty laundry, including Hawks' murders of Twice and Best Jeanist, and his father being a criminal who Endeavor had locked away. Endeavor is left absolutely speechless, thinking about his past raising Toya to be his successor and his supposed death, and Dabi prepares to finish everyone off with his own Prominence Burn. But suddenly, he and the other villains are restrained by metal cables from the sky, as an alive Best Jeanist enters the battle.