Chizuru Nakamura attends Sakuragaoka High School as a first-year student and shares classes with Hiyori Suzumi. She wears glasses and harbors intense devotion toward the male idol duo LIP×LIP. This fandom triggers pivotal narrative events when she uncovers Hiyori's concealed role as the duo's manager-in-training, igniting jealousy over Hiyori's proximity to the idols. The jealousy fuels interpersonal tension between them within the school environment. Chizuru further engages in group activities, performing the ending theme song "Tokyo Sunny Party" alongside Hiyori and fellow classmate Juri Hattori.