Jujutsu Kaisen, Vol. 18 Big Book, Paperback Book, By: Gege Akutami

To gain the power he needs to save his friend from a cursed spirit, Yuji Isadora swallows a piece of a demon, only to find himself caught in the midst of a horrific war of the supernatural! In a world where cursed spirits feed on unsuspecting humans, fragments of the legendary and feared demon Roman Sukuma have been lost and scattered about. Should any demon consume Sukuna's body parts, the power they gain could destroy the world as we know it. Fortunately, there exists a mysterious school of jujutsu sorcerers who exist to protect the precarious existence of the living from the supernatural! In order to thwart the culling game, Isadora needs the help of Kanji Harari, a third-year who is currently suspended from Jujutsu High, so he decides to participate in an underground fight club where Harari works as a bookie. Meanwhile, Fushiguro infiltrates the fight club and heads for Hakari's base of operations, but another Jujutsu High third-year is using their cursed technique to block his way!