A martial artist who achieved immortality after drinking Yukihime's blood as a kid. He lost all his memories from before age twelve in some kind of accident, though he's never gotten into the details about it. What stuck with him, though, was his natural talent for fighting—good enough that even Yukihime, who's pretty hard to impress, respects his skills.
He joined UQ Holder's exclusive immortal squad called "numbers" and was assigned the rank of 7. It's one of the higher slots in the organization, which says something about where he stands among the other immortals there.
Content compiled by AnimeList.moe from publicly available sources.
