Kaname Tanuma, a 15-year-old student sharing a classroom with Takashi Natsume, navigates life with a delicate constitution prone to frequent illness. Though unable to fully perceive supernatural entities, he detects traces of their existence through fleeting shadows or faint auras—a muted ability that fuels his uncertainty about aiding others effectively. Despite this self-doubt, he quietly supports Takashi during spirit-related challenges, driven by a resolve to help within his limits while fearing his actions might cause unintended strain.

Introverted yet earnestly kind, his reserved demeanor masks a steadfast willingness to contribute, balancing quiet vulnerability with persistent effort. Details such as his September 17 birthday, 171 cm height, and O blood type anchor him as an approachable figure amid extraordinary circumstances, emphasizing his relatable humanity against a backdrop of unseen forces.