The Fullmetal Sorcerer (Male reader x Jujutsu Kaisen)

Y/n is the current vessel of a powerful cursed spirit from the Heian era. He's also a student in jujutsu high that happens to have a metal arm. While y/n is happy to just kill curses, the curse spirit in him wants to seek out the strongest opponents and let loose!

This problem only gets worse when Sukuna's vessel arrives to jujutsu high.