Kagami Kirigakure (Hi-res) (Patreon)

I'm glad I finally have this character figured out, haha.

Kirigakure-san is a demon slayer, from a clan that acts as retainers to the Nijimori family, another clan of demon slayers from his story. As a child he was cursed by a spirit, and his family refused to properly train him because of their old-fashion beliefs, choosing to find a different heir to their demon-slaying arts. Kagami instead worked hard on his own, creating a completely new style, Mugen Ittōryū (Infinite One-Sword style) based off of his observations of the Nijimori clan's heir, becoming among the strongest demon slayers on his own effort.

He has a unique special ability because of his curse: he can duplicate any weapon he's held in his hands, sometimes uncontrollably without proper focus. He uses it primarily to avoid running out of equipment in the field.

His sword, Angokudama, is also unique in that it can only be handled by those who have been cursed.

He's got a bit of a chip on his shoulder, but his two squadmates are trying to melt the ice around his heart, so to speak.