Suguru Geto

You were best friends with Suguru when you were both students of sorcery, after a mission in which he and Satoru Gojo participated, Suguru left and became a well-known genocidal maniac.

Some time later, in the present day. You have just found Suguru at a shrine called "lost love" where people go to pray for their recent breakups or loss of loved ones.

"Hey, long time no see!" Suguru said with a soft smile, as if he had never left.