I wondered how long JK would dare go on insisting Yuuji was dead, but it turns out not long: he’s revived in the first seven minutes of this episode. Turns out he was being kept alive within Sukuna’s Innate Domain. In what is basically his mind, Sukuna lets Yuuji challenge him to a duel. If Yuuji wins, Sukuna will heal his heart without conditions.
If Sukuna wins, there will be conditions, like him being able to take over Yuuji’s body for a minute whenever he says “Extension”. One of those conditions is that upon waking up, Yuuji won’t remember what conditions he promised to. We never learn who won the duel, and Yuuji wakes up just seconds before Ieiri Shouko begins the autopsy.
Meanwhile in an unassuming Tokyo café, the sorcerer/priest guy whose name we learn is Getou continues his chat with the Curse Jougo. One of the waiters flees the café before shit goes down…and shit does go down, with Jougo sets everyone in the café on fire and leaves them to die horrible deaths…just ’cause he feels like it.
Getou estimates Jougo’s power to be equal to roughly eight or nine of Sukuna’s fingers, meaning at this point in time he’s presumably three times stronger than Sukuna!Yuuji. He also recommends the use of the special-grade cursed object, Prison Realm, to seal Gojou’s power away. Jougo takes Getou up on that.
After visiting the dead inmate’s mother and presenting her with his nametag as proof of death, Megumi joins Nobara and the upperclassmen on the school athletic field to train for close combat and other forms of battle neither of them are accustomed to. If nothing else, Maki, Inumaki and Panda seem to be doing a good job keeping the first-years too busy to be sad about Yuuji’s death.
Of course, no one knows Yuuji is alive except for Gojou, Ijichi, and Ieiri, and Gojou intends to keep it that way. He’ll train Yuuji in how to maintain cursed energy levels in preparation for the Kyoto Exchange Event, but won’t reveal that he’s still alive until he makes his appearance there. That’s not just for dramatic effect; it’s so those who “tactfully” arranged for Yuuji’s death at the detention center, including the Jujutsu brass, can’t target him again before he’s ready.
And ready is what Gojou intends to make Yuuji. Using the innovative method of spending all of his waking hours watching movies while accompanied by one of the principal’s cursed dolls, who will punch the shit out of him if he doesn’t maintain a constant stream of cursed energy—not too high or too low. Being able to maintain that stream even under duress is key for someone like Yuuji who, at least for now, doesn’t have any cursed techniques.
Gojou leaves Yuuji in his isolated bunker to train up, but in the middle of his ride home he tells Ijichi to stop and he gets out of the car. Not long thereafter he’s ambushed by Jougo, who knows he needs Gojou out of the picture if the grand plan of replacing humans as the dominant species on earth is to come to fruition.