Jujutsu Kaisen Vol 1

Jujutsu Kaisen by Gege Akutami. A Shonen manga rated Older Teen, published in English by Viz Media.

High schooler Yuji Itadori has unbelievable physical strength but no interest in the occult, until he swallows a cursed finger belonging to Sukuna, the King of Curses. Now sharing his body with a demon, Yuji enrolls at Tokyo Jujutsu High to learn to fight curses, and to find the rest of Sukuna's fingers.