About

Transformation Tuning Fork: Onkaku A tuning fork-shaped item used to transform into an Oni. By unfolding the horn-shaped fork and striking it with a finger or against an object, it generates a special sound wave. By holding it to the forehead while the wave is active, the user is enveloped in flames and transforms into an Oni. Animal Discs Disc-shaped records that, when inserted into the Onkaku, Onteki, Onjou, or Onka and played, transform into animals to fight alongside the user. Transformation Bracers: Onjou and Onka Bracelet-type items worn on the left wrist used to transform into an Oni. Pulling the ring downward reveals strings in the center; plucking these strings generates a special sound wave, causing the user to be struck by intense lightning and transform into an Oni. This lightning can also be used to damage enemies. Transformation Whistle: Onteki A whistle-type item used for transformation. By unfolding the two folded horns and blowing into it, a special sound wave is generated. By raising it to the forehead, the user is enveloped in wind and transforms into an Oni. Makamou Natural enemies of humanity that have existed since ancient times. They hunt and devour humans, appearing in forms consistent with local legends and customs of various regions. They can only be completely exterminated by an Oni's Sound Beat attack. Oni Oni are not mere monsters, but warriors who have transformed through human training. The process follows: Human → Rigorous Training → Awakening as Oni → Exterminating Makamou. Oni are beings who have hardened their bodies to fight Makamou, and their existence is largely unknown to the general public. Upon transformation, they take on the form of an Oni, and their faces change into ogre-like masks.