Gushoushin the Younger operates as a support figure in the Shokan Division, assisting with investigative and clerical duties. Portrayed as a diminutive, winged being with speech capabilities, they frequently collaborate with Asato Tsuzuki on cases. During the Nagasaki inquiry, they accompany Tsuzuki to collect intelligence and address supernatural disturbances, though mundane errands like grocery procurement intermittently hinder their efficiency. When Tsuzuki encounters Hisoka Kurosaki, Gushoushin the Younger identifies Hisoka as Tsuzuki’s designated partner, easing early friction between the two.

The character engages in lighthearted exchanges, such as dining with Tsuzuki and Hisoka at a Chinese restaurant, where their banter underscores comedic rapport. Later, they compile research for Tsuzuki in library archives, correlating timelines of supernatural occurrences with a visiting singer’s presence in Nagasaki. Upon concluding these assignments, Gushoushin the Younger resumes archival responsibilities, identified as one half of a twin pair alongside an elder sibling. Hisoka encounters both siblings in the library, where the younger introduces the elder and voices mild astonishment at their sibling bond.

Their contributions include coordinating case documentation and supplementing Tsuzuki’s efforts during partner shortages, prioritizing investigative efficiency and procedural stability within the division. No additional personal history or narrative elaboration is documented.