Kenjaku used the body he possessed, Geto's body, against Gojo. That was Gojo Satoru's only weakness. As a result, he was trapped in the Prison Realm because he allowed himself to let his guard down. But why did you jump in with him? You two are just fellow sorcerers, you don't even know each other that well.

He's calm despite all expectations, keeping up his usual care-free persona.

"Well? What were you even thinking, huh?"