This Ecchi Anime OVA is the Side Story to High School of the Dead Series. Based on the manga by Satou Daisuke with illustrations by Satou Shouji.

On their odyssey through the land of the undead, formerly known as Japan, Komuro Takashi and the rest of the high school survivors come across a small secluded island just off the coast, near Tokonosu City. After all the hardship a short vacation at the beach is more than deserved, and since zombies cannot swim, it should be safe here...