Shun Kisaragi, a male student at Ryokuto Academy, resides in Greenwood Dormitory as Kazuya Hasukawa’s assigned roommate. His delicate features, long hair, slender frame, and high-pitched voice create a strikingly feminine impression, prompting dorm leaders Mitsuru Ikeda and Shinobu Tezuka to orchestrate a prank betting on how long Kazuya will mistake him for a girl. The deception unravels when Kazuwa discovers Shun using the men’s restroom, conclusively revealing his gender.

As the eldest son of the Kisaragi family—owners of a renowned chain of traditional Japanese inns—Shun’s matrilineal inheritance tradition does not shape his gender expression or aesthetic choices. His younger brother, Reina, mirrors his effeminate traits, while their infant sister, Yui, is destined to inherit the family business. Openly heterosexual, Shun once dated a girl in junior high and deliberately embraces feminine fashion, viewing it as a means to project an air of polished elegance.

Though his demeanor leans girlish, Shun balances self-assurance with pragmatism, readily engaging in dorm activities. He contributes to Greenwood’s collaborative projects, including an inter-dorm fantasy film titled *Here is Devil Wood*, and displays decisive leadership during emergencies—such as mobilizing efforts to rescue Mitsuru after a kidnapping.

Within Greenwood’s eclectic community, Shun’s presence transitions from initial curiosity to seamless acceptance. Fellow residents treat him without fanfare, fostering mutual respect. His relationship with Kazuya shifts from comedic gender confusion to grounded friendship, positioning Shun as a steadying force amid the dorm’s lively chaos.