Shiki Ichinose would have never guessed his adoptive father used to be an Oni-hunting Momotarou, much less that the old man walked away from that life just to raise him despite Shikis dangerous Oni blood. After seeing the only parent he ever knew murdered by a Momotarou assassin, Shikis blood awakens. Thrust into an ancient conflict between Oni and Momotarou, Shiki will fight to survive, to take his revengeand to hold back the calamity coursing through his veins