The band's bassist, Mugi, and drummer, Ritsu, share a secret kink - they love to watch each other masturbate while listening to their band's music. One day, they decide to take it a step further and have sex to the beat of their own songs. Mugi's fingers strum Ritsu's wet pussy while Ritsu beats a steady rhythm on her own clit with a drumstick, their bodies moving in sync with the music, their moans reaching a crescendo as they climax together, their juices mixing with the sweat on their bodies.