"Oni" and "Momotaro" bloodlines have been passed down among certain people for generations. Long ago, the Oni lived hidden away, aware of their own savagery. However, their peace was disrupted by an invasion initiated by Momotaro. For thousands of years, these two groups established organizations known as the "Momotaro Agency" and the "Oni Agency," and have been in a continuous conflict ever since. The main character, Shiki Ichinose, suddenly learns of his Oni heritage after an unexpected attack by Momotaro. This discovery propels Shiki on a path to uncover the fate that lies within his blood and to confront the Oni that resides within him. In this tale of demons, a new generation of dark heroism begins here!
