Jubei is one of the Six Heroes and best known as Ragna the Bloodedge's master. He's also Kokonoe's father, though fans often note their relationship seems strained for reasons that haven't been fully explained. Despite looking unassuming, he's widely considered the strongest being on the planet—numerous characters have attested to this. He fought the Black Beast alongside Hakumen and was involved in the Ikaruga Civil War. The Kaka Clan were actually genetically engineered from his DNA.
Jubei has always positioned himself as a protector of his friends when things got rough. His partner Konoe was killed by Yūki Terumi before the series began, a loss that clearly shaped him. He was once known by the name Mitsuyoshi as well.
Content compiled by AnimeList.moe from publicly available sources.
