"You carry the blood of an Oni..."
In a hidden lineage passed down among a select few, the blood of the Oni and Momotarō continues to flow.
Long ago, the Oni, aware of their own violent nature, chose to live quietly in seclusion.
But peace shattered when Momotarō launched an attack.
Over the centuries, both sides formed powerful organizations:
the Momotarō Agency and the Oni Agency, locked in conflict for thousands of years.
Suddenly attacked by the Momotarō, Shiki Ichinose, the protagonist, learns the truth—he is an Oni.
And when he comes face to face with the demon that dwells within his own blood, his fate is set in motion...
A new-generation dark hero Oni tale begins now!