Ichinose Shiki, an inheritor of the Oni bloodline, spent his entire childhood unaware of this truth. However, when a mysterious man breaks into his home with the intent to assassinate him, his foster father finally reveals the hidden reality. In a world where Oni and Momotarou have always been unable to coexist, follow Ichinose as he embarks on a journey for power and strives to unify the two races!
