OVA
Description
Setsuna Yūki navigates a double life as a second-year Nijigasaki High School student. By day, she is Nana Nakagawa, the diligent student council president, recognizable by her glasses and braided pigtails, carefully concealing her true passions from her strict parents who disapprove of anime, manga, and school idol activities. To pursue these interests, she adopts the stage name "Setsuna Yūki" – inspired by light novel characters – presenting herself as an energetic school idol with long bluish-dark gray hair, partly tied in a ponytail adorned with a rose ornament.

Her personality bursts with high energy, emotional expressiveness, and deep passion. Setsuna easily grows excited, talking extensively about anime, manga, video games, and school idols when the topic arises. She dedicates significant time to these hobbies, often watching five hours of anime and playing three hours of video games on weekends. Academically, she excels in all subjects except health class, which she finds embarrassing, and consistently completes homework promptly.

Driven by passion, Setsuna initially founded Nijigasaki’s school idol club. However, her perfectionism and intense focus on conveying emotion inadvertently pressured other members, leading to internal conflict. Wracked with guilt, she disbanded the club. Later, after the protagonist gathered new members, she rejoined, revealing her dual identity in the process. Her approach evolved significantly, prioritizing individual expression within the club and supporting each member's unique style.

As a member of the subunit A・ZU・NA, Setsuna actively collaborates with platforms like Dengeki Online to promote school idols. Her distinctive, fiery performances mark her as a rising star. Despite her busy schedule, she remains a supportive friend, encouraging Kasumi Nakasu despite culinary mishaps and assisting others with dance and vocal practice. Her own cooking, ambitiously creative, is described as having an "original" taste, often leaving others reluctant to critique it.

A key development involves reconciling her identities. After her mother discovers her idol activities, she gains familial acceptance, allowing her to integrate her passions openly. She steps down as student council president to Shioriko Mifune but continues balancing academic responsibilities with idol work. Setsuna's overarching dream, inspired by the inclusive spirit of school idol culture, is to create a world where people can openly express their passions.