Shuramaru lives secluded from his village, his unusual powers inciting fear and hatred among the villagers. He initially believes himself fully human, ignorant of his true nature.

This self-perception shatters when powerful fighters arrive, forcing him to confront the reality of his hidden abilities. Their appearance triggers a transformation, awakening latent powers within him. The revelation shatters his understanding of his identity and origins.

Shuramaru possesses the ability to transform into an oni, a demonic entity. This power stems directly from his inhuman heritage, violently contradicting his lifelong assumption of humanity. His journey becomes a reckoning with this dual nature, reconciling his human self-perception with the emerging demonic facets of his existence.

His development centers on acknowledging and accepting his non-human identity while navigating the consequences of his transformation. This process involves integrating these previously suppressed or unknown powers into his fundamental sense of self.