Jujutsu Kaisen manga volume 3 features story and art by Gege Akutami.

Yuji Itadori is resolved to save the world from cursed demons, but he soon learns that the best way to do it is to slowly lose his humanity and become one himself!

Tensions are high as the Goodwill Event between the Tokyo and Kyoto campuses of Jujutsu High approaches. But before the competition can even begin, a couple of Kyoto students confront Fushiguro and Kugisaki. Meanwhile, Yuji's training gets interrupted by a mysterious crime involving grotesque bodily alterations caused by a cursed spirit...