While Hime Yarizakura, Akina Hiizumi, Ao Nanami, and Kotoha Isone take a hot-spring trip away from their usual work at the Hiizumi Life Counseling Office, Sakurashin's police force is left alone to face a new youkai-hunter threat moving through the human-youkai town. The three-episode OVA splits its time between the group's vacation antics and the police investigation that closes out the manga's youkai-hunter arc. It follows directly from the Hana no Uta TV series.