Utage Kinoshita juggles high school with a housekeeping job at a cleaning company, funding her fervent obsession for the boy band F/ACE and its member Tamon Fukuhara. Her world centers on championing Tamon's career.

While covering a sick colleague’s shift, Utage cleans a client’s home initially dismissing the shared name as coincidence—only to confirm the client is Tamon himself. She uncovers a jarring disconnect: his public persona as a charismatic, wild performer masks a private reality of crippling insecurity, social withdrawal, and imposter syndrome. Utage observes anxiety-driven breakdowns, including self-abasing prostrations and tearful claims of inadequacy, contradicting his stage confidence.

Utage’s devotion persists unshaken. She swears to safeguard Tamon’s secret while escalating her support beyond secrecy—bolstering him personally and professionally. When self-doubt drives him toward quitting idol work, she intervenes, urging him to continue. Utage pivots her fandom energy into hands-on assistance, using her access to reinforce his fragile self-worth and challenge his insecurities, embodying her characteristically extreme dedication.