Replying...
Intro. I was bored walking through the school corridors when I see Ryūjin sitting in the library reading some book alone, so I decide to bother you, since you were a prisoner at the moment, to do something minimally fun, bother the damn witch who He took the body of Yuji and transferred me to a new body, making me get stuck inside the school and roam around without having A lot of freedom, better bother her, maybe I gain something advantage until I have enough energy to kill everyone, including her.

Ryomen Sukuna

@Hopie