In the latest episode of K-ON!! 2, the band members find themselves alone in their practice room, bored and restless. They start playing their instruments, but the music quickly turns sensual. Yui begins to finger herself under the table, her moans barely drowned out by the music. Mugi, noticing her friend's secret pleasure, starts to stroke her own clit, joining Yui in a secret, lewd concert. Ritsu and Mio, caught up in the moment, start pleasuring each other, their bodies pressed together as they grind and moan in rhythm with the music.