Rihito Hiyakawa blends exorcism with entrepreneurship, running a cleaning service that covertly banishes spirits through unorthodox techniques. His methods demand physical contact with supernatural entities and sensory synchronization with partners, leveraging shared perception to dismantle threats. Despite his social ineptitude and brusque manner, his track record secures professional respect. Wavy blond hair frames piercing yellow eyes tinged with deeper brown near the iris, while his perpetually unbuttoned collar hints at a disregard for convention.

Initially aloof, his dynamic with Kosuke Mikado fractures his solitary tendencies. He asserts their collaboration is destiny, rooted in Kosuke’s latent spiritual aptitude. To amplify exorcism power, Rihito merges their physical forms—a taxing process requiring Kosuke’s consent. This symbiosis strengthens as Rihito stresses their shared purpose, framing fear as a weakness their unity overcomes.

Pragmatism guides his tactics, such as prescribing erotic focus to disrupt spiritual interference, a strategy he rationalizes through obscure folklore. During investigations, he avoids visceral crime details, prioritizing clinical detachment. His exchanges with Lieutenant Hiroki Hanzawa underscore a preference for streamlined resolutions, sidestepping emotional entanglement.

An undisclosed secret from his past shadows his choices, subtly complicating his bond with Kosuke. Post-mission meals and deadpan quips punctuate his otherwise reserved demeanor, hinting at layers beneath his utilitarian exterior. Though media adaptations vary, his core remains unchanged: a paradox of proficient eccentricity and emotional reticence. Dependency on Kosuke shifts from tactical necessity to silent reliance, their partnership anchored in unvoiced loyalty and an unwavering belief in their intertwined fate.