The Class 1-A and 1-B students led by Yaoyorozu work together to set up their trap, successfully getting Gigantomachia stuck in the ground, with the plan of forcing his mouth open and injecting a sedative into him to knock him out. They attempt to get in close to the League still on his back, but are pushed back by the villains, and literally blown away by the beast as they try to throw the sedatives inside. Dabi's fire prevents most of them from getting any closer, but using her Quirk, Mina is able to rush through to reach the beast. However, she ends up recognizing Gigantomachia from their encounter during middle school, and hesitates just long enough to miss her shot. He nearly crushes her, but is saved by Kirishima, who manages to hold onto his leg and successfully throws Mina's sedative canister into his mouth. The Pro Heroes return to battle, however everyone is stunned as Gigantomachia starts to transform his body. Meanwhile in Jaku, Shigaraki declares his conviction how heroes save people while abandoning their families, and that he is the result of them all ignoring the true problems of their society. He refuses to let up the assault, and ends up critically injuring Gran Torino, who at this time remembers back to the incident when Nana abandoned her son to save him, wondering if what they did was right. Shigaraki attempts to go after Eraser Head, but is held back by Deku and Ryukyu using all of their strength. Unbeknownst to them however, Shigaraki is in possession of a Quirk-Destroying Bullet, and uses his fingers to shoot it toward Eraser Head, hitting him in the leg.

Upon seeing Bakugo getting stabbed, Deku snaps and in an enraged haze attacks "Shigaraki", who uses the opportunity to catch him off guard and touch his face, starting to steal One For All. Deku suddenly appears in the vestige world of One For All where he's faced against Shigaraki and All For One, who has begun to merge into the former's body despite his resistance; due to being unable to move in the world, Deku is supported by Nana Shimura. All For One introduces Shigaraki to his grandmother and reveals that a part of a person's consciousness resides within the Quirk Factors, explaining how the One For All predecessors still reside within the Quirk. Shigaraki begins to try and erode all of One For All, as well as All For One himself, but they are repelled away by All For One's younger brother. All For One attempts to discredit Deku for his failures, but his brother defends him for all the qualities he has in a hero. The two re-emerge in the real world, as All For One tells Shigaraki to flee so his body can adapt to the Quirk. Meanwhile, the evacuation team splits up to aid the team fighting Shigaraki and continue the evacuation in Gigantomachia's wake; Nejire and Iida go with the former and Ochaco and Tsuyu with the latter. The League on Gigantomachia's back observe the incoming heroes, and when she spots Ochaco and Tsuyu, Toga leaves to confront them, wanting to ask them a question still distraught over Twice's death. Disguised as an old woman, Toga lures Ochaco into an abandoned building where at knife point she asks what she plans to do with her; Ochaco responds she will do whatever she can to help the people in trouble. As she pushes Toga off, Ochaco plans to apprehend her.