Tsukumo stands among the ten reincarnated warriors charged with confronting supernatural threats. He wields mirror-based powers, projecting light-based attacks and gathering vital intelligence through reflections. A constant behavioral hallmark sees him keeping one hand perpetually tucked inside his jacket, maintaining contact with a concealed mirror for readiness, though the practical necessity of this habit remains undefined.

In early conflicts, he assumes the role of tactical leader, coordinating fellow warriors against demonic kyoma. His combat contributions prove significant, inflicting heavy damage during group battles and delivering decisive final strikes. However, his active involvement sharply diminishes in later episodes. During the climactic confrontation against the primary antagonist, he abruptly departs, citing lack of authorization as his reason. This exit occurs without subsequent reappearance or narrative explanation for his absence.

As the Warrior of the Mirror, he holds a position among the legendary fighters destined to prevent the resurgence of a historical demonic ruler. Despite this foundational importance, his personal history, motivations, and evolution across documented events receive no detailed exploration. No supplementary character development occurs for him within spin-offs, films, or other expanded media in the provided materials.