Berserk of Gluttony

暴食のベルセルク

Fate Graphite has spent his life starving—his skill, Gluttony, leaves him perpetually hungry without granting any useful power, making him the lowest servant in a noble household. When he kills a thief in self-defense and absorbs the man's abilities, Fate discovers Gluttony's true nature: it devours the skills of anyone he slays. Armed with a sentient black sword named Greed, he sets out to rise beyond the rigid class system that kept him in the gutter.