After a swordfight, Amane, a young samurai with a haunted past, is left for dead,only to be saved by a mysterious tattooist who imbues Amane with the immortal spirit of an oni demon. From that day on, Amane ages no more.
Amane learns of another with a similar oni,one that requires its host to kill,which leads Amane to the realization that the ""other"" is the man who murdered his sister years a