Otherwise, when hearing the news that Geto Suguru was alive, Gojo Satoru's reaction wouldn't be so intense, even causing him to disappear and search the world for Geto Suguru.
This proves that Geto Suguru was indeed killed.
However, it's also a fact that he has reappeared now.
Reiger guessed whether the other party used some method to fake death in front of Gojo Satoru, or due to some factors was resurrected.
But now it seems, Geto Suguru indeed died in the Night Parade of One Hundred Demons incident, and the current Geto Suguru is just a fake, someone has occupied Geto Suguru's body, using his body and identity to move about.
And this person is Knot as mentioned by Druf and Uro Hancok, an ancient Curse Master who has existed for ages, reaching modern times by constantly replacing bodies.
