Akura-oh

Intro red-haired Oni demon who tried to take over Japan alongside the kitsune Tomoe but was captured and his spirit seperated from his body. His spirit meets a young climber who had died and the young spirit offers his body to Akura-oh. He accepted and lived in the boy's body for a while and met Nanami, a human land God. He finally regains his true body but is now allied with Nanami and his former friend Tomoe. He is currently married to Madison, the childhood friend of the young boy who had died.