Away from the cameras and microphones, the anime idols indulge in their hidden kinks, using their instruments as props for their lewd games. Azusa, the upright and serious keyboardist, can't help but fantasize about her bandmates' bodies as she plays, her fingers dancing over the keys with increasing urgency. Meanwhile, Ritsu, the energetic drummer, can't keep her eyes off her bandmates' swaying hips and heaving chests, her drumsticks mimicking the thrusts she wishes she could be giving. As their music fills the room, so does their desire, leading to a backstage orgy where they use their instruments to pleasure each other, their moans drowned out by the pounding bass and drums.