LAGUN

The manga version of one of Shsetsuka ni Nar's most popular isekai fantasy novels!Gaile, a Cursificer, is left penniless when he's expelled from his party as soon as they reach S Rank. Apparently he wasn't contributing enough?! But they hadn't realized that his cursed items outperform even holy relics and legendary equipment!Gaile decides to try to make a living on his own off of his cursed items.(Summary by Knox Scans)

Gail Hamilton is a "curse crafter" who got booted from his party for allegedly not pulling his weight...right after they were promoted to the Guild's "S" rank. Unfortunately, the party didn't realize that Gail's cursed goods pack the power of holy relics and legendary gear! But too bad for them, because Gail's going it alone now...and causing a sensation with the creepy-yet-useful curses he works with!