Izuku awakens in the vestige world of One For All, where he encounters all eight predecessors of One For All (with the second and third users facing away from him). The first user reveals that between One For All's increased growth in power and All For One's intervention, they are now freely able to communicate with each other and Izuku. The fourth user and the user of Danger Sense, Hikage Shinomori, introduces himself to Izuku, as they discuss with him about the true nature of One For All. He reveals that he died at the age of 40 due to "old age", after holding One For All for 18 years. Aware that All Might held the power for 40 years, they determine that One For All greatly diminishes the lifespan of those who already possess a Quirk, and because All Might was Quirkless, he was saved from this burden. Due to this revelation, they surmise that due to the increased power in the Quirk and the decreasing Quirkless population, Izuku may be the last wielder of One For All. Nana then confronts Izuku, asking if he is resolved to kill Shigaraki, stating that All For One intends to use his intense rage to overwhelm and finally steal One For All, which he has failed to do in the past. They are aware that Izuku felt like he needed saving, but warn him that he could be beyond saving and turn into an unstoppable monster. Izuku stands firm that he saw a little boy crying within Shigaraki during their encounter, and that All Might showed him One For All is a power meant to save not kill, so while he is resolved to do so if he has to, he wants to try and save him first. The users accept his hand as Nana breaks down in tears, apologizing for testing him. Back outside, Hawks and Best Jeanist confront All Might about One For All and realizing he can't keep the secret anymore, reveals everything to them. Several days later, Endeavor, Hawks, and Best Jeanist put on a press conference to address the public of Dabi's accusations, and their plan to turn U.A. into an evacuation facility to protect the civilians. At the same time, Izuku gives letters to all of his classmates, revealing the truth about One For All and All For One, and leaves the school.

Deku saves a tall mutant woman being attacked by panicking civilians who believe she's a villain, having All Might escort her to safety. While surveying the city with the One For All users, he thinks back to during the conversation with the vestiges when the first user, Yoichi, requests the Second and Third users' help in assisting Deku. They reveal they were from the era when All For One was at the peak of his power and part of a resistance fighting against him, unable to agree with Deku's idealistic beliefs. However, Yoichi reminds them how they had saved him from All For One's capture, rather than killing him like they were originally going to, and that was what allowed One For All to grow in the first place. They eventually are convinced to follow alongside him. Later after taking care of some thieves, Endeavor is lambasted by protesting civilians over his failures and for continuing to keep secrets. Endeavor, Hawks, and Best Jeanist proceed to discuss All For One's plans, believing he intends to completely hijack Shigaraki's body before pursing Deku, and surmising he requires Shigaraki's hatred to steal One For All because he lacks any. Just then, Deku's GPS goes out, while All Might's car is attacked by a smoke bomb. It turns out his phone was sniped by former Public Safety Commission Pro Hero, Lady Nagant, one of the Tartarus escapees sent by All For One to capture Deku. She uses her Quirk, Rifle, to shoot at him from afar, causing him to swing around the city and attempt to evade and defend. Lady Nagant is accompanied by Overhaul, who she had rescued from Tartarus, telling him to hide. A flashback shows that Nagant reluctantly agreed to All For One's request learning about Deku's overt idealism about hero society and accepted payment in the form of a second Quirk, Air Walk.