Isawa Akuma was a shugenja from the Phoenix Clan who lived in the 3rd century. Obsessed with the power of names, Akuma found himself drawn to the study of the oni of the Shadowlands. He went as far in his studies as to capture an oni, which proved to be his undoing. The oni stole Akuma's name, forcing him to wander the Shadowlands insane, until he was killed by the Kuni.