Listen to 星の鼓動 (いもウザ)・Heartbeat of the Stars (My Friend's Little Sister Has It In for Me!) (PianoBox Music) online. 星の鼓動 (いもウザ)・Heartbeat of the Stars (My Friend's Little Sister Has It In for Me!) (PianoBox Music) is an Instrumental language song and is sung by Relaxu. 星の鼓動 (いもウザ)・Heartbeat of the Stars (My Friend's Little Sister Has It In for Me!) (PianoBox Music), from the album Anime PianoBox Collection, Vol. 58, was released in the year 2025. The duration of the song is 1:19. Download Instrumental songs online from JioSaavn.