Shuuichi Natori navigates dual identities as a charismatic actor and an exorcist from a fading clan. Born into a family that abandoned spiritual work after losing their ancestral powers, his ability to perceive spirits sparked blame and ostracism, fueling youthful bitterness and a solitary existence. This isolation hardened his distrust of youkai until a pivotal encounter with mentor Takuma Yousuke reframed his cursed gift as a means to protect others.

Joining exorcist society thrust him into rivalry with Seiji Matoba, whose opportunistic sabotage during a mission against a three-horned youkai solidified Natori’s resolve to forge an independent path. Initially favoring aggressive exorcisms to prioritize human safety, his rigid methods clashed with Takashi Natsume’s empathy for spirits. Their uneasy alliance gradually tempered Natori’s pragmatism, blending lethal precision with occasional mercy. He evolved into a guarded mentor for Natsume, driven by shared experiences of alienation and a determination to shield him from manipulative forces like the Matoba clan.

A mobile lizard-shaped birthmark—visible only to spiritually aware individuals—trails his skin, deliberately avoiding his left leg as if anticipating future vulnerability. His glasses, augmenting modest innate power, underscore his liminal existence between human society and the supernatural world.

Three shikigami define his craft: Hiiragi, a once-bound spirit he liberated, and sisters Sasago and Urihime, who aid in combat. Mastery of paper manipulation highlights tactical ingenuity, yet his growth lies in emotional depth, hinted by childhood flashbacks of tenderly bandaging Hiiragi’s wounds.

As an actor, he cultivates a charming, flirtatious persona mirroring his roles—a shield against genuine connection forged through years of shallow fan adoration. This facade slowly cracks through bonds with Natsume, revealing a man reconciling performer and protector, outsider and ally, while balancing empathy with the ruthless demands of his shadow profession.