Kyoushirou Mibu

Beneath that demeanor, Kyoshiro is a frighteningly skilled swordsman known as the "Demon-God" and the only fighter stated to have defeated Kyo. He has mastered the Mumyou Jinpu Ryuu sword style and can transfer human souls, using that ability to place Kyo's soul inside his own body while hiding Kyo's body. His violent past includes killing Yuya's brother, Shiina Nozomu. He is also revealed as a high-ranking Mibu and one of the Red Cross Knights created from the former Aka no Ou's flesh and blood. By the manga's end, Kyoshiro lives with Sakuya and visits Yuya and Kyo.