Tartarus

The All For One possessed Shigaraki and his army of Near High-Ends raid Tartarus, the maximum security prison in which the "dregs of society" are thrown in to never be released. They successfully destroy the main gate, killing the guards, and make their way toward the main facility on an island. While flying on a Nomu, Shigaraki attempts to regain control of his body, but his master's will remains stronger, telling him to rest and that he is to become "the next me". Using their shared consciousness, both All For Ones execute dual EMP attacks, shutting down the power in the prison from the inside and out. This results in all the prisoners being let free and proceeding to go on a rampage, which includes Muscular, Moonfish, and Stain; a female prisoner releases Overhaul out of his cell. "Shigaraki" reunites with All For One, declaring to the prisoners to follow him if they want to escape, as it is the start of how he became the greatest "Demon Lord". All For One proceeds to commandeer several air crafts, sending the Nomu and inmates to attack seven other prisons around the country, freeing the prisoners from six of them. "Shigaraki" returns to the League to rest his body, leading Spinner to argue that he intends to follow Shigaraki, not whoever's controlling him, despite his claims that he has the best interests in mind. Two days later, Bakugo awakens at Central Hospital where he learns from his classmates the state of everyone after the War. Gran Torino and Eraser Head are still alive, but in critical condition. Endeavor is taking part in surgery, while the hospital is surrounded by protesters. Shoto recovers from his injuries, resolving that he is the one who has to stop his brother, just as his siblings and mother appear to greet him. While everyone else has regained consciousness, Midoriya still remains in a comatose state, watched over by All Might.