The idol group’s manager, Kei, discovers her unusual physiology grants her unique stamina offstage—a secret she shares intimately with her bandmates. Their practices become sessions of raw, erotic connection, where Kei dominates with deep, rhythmic thrusts, leaving all breathless and fulfilled. Through fervent nights of mutual surrender, their bond deepens into something both carnal and tender, each performance echoing the private ecstasy binding them.