In a world where the age-old feud between “Momotaro” and the “Oni” has been passed down to the present day, the Momotaro Organization operates as an agency dedicated to vanquishing the Oni, while the Oni counter with “Blood-Erosion Release,” which transforms their own blood into weapons and abilities.
Those who inherit the blood of the Oni undergo combat training at places like Rakusha Academy, preparing themselves for battle against the Momotaro Organization. Meanwhile, within the Momotaro Organization, there are also individuals who wield the power to manipulate blood, and the two factions clash, each staking its beliefs on the line.
At Rakusha Academy, a diverse array of unique Oni gather, and teachers and students alike devote themselves daily to training and missions. Beyond combat, there is also ordinary school life—classes, meals, and even trivial arguments.
