Jujutsu Kaisen, Vol. 4 I'm Gonna Kill You!

While investigating a strange set of mysterious deaths, Itadori meets Junpei, a troubled kid who is often bullied at school. However, Junpei is also befriended by the culprit behind the bloody incident—Mahito, a mischievous cursed spirit! Mahito sets in motion a devious plan involving Junpei, hoping to ensnare Itadori as well. -- VIZ Media