OVAThe gang find themselves on a remote tropical island, supposedly free of zombies. While the girls have some fun on the beach, Kohta finds some fish while Takashi locates some leaves for a fire. However, these leaves turn out to be hydrangea leaves, the smoke from which cause everyone to start having strange sexual hallucinations. Takashi is led away by who he imagines is Saeko, who he then proceeds to imagine to make love with. Meanwhile, Shizuka imagines Saya to be her friend Rika, while Saya imagines her to be her mother. Saya imagines the two bathe each other, while Shizuka imagines they are in bed. When Saya comes to, she is found lying on Shizuka. She then sees Rei and Saeko kissing each other, imagining that each other was Takashi. She also sees Kohta, still in his bathing suit, dry-humping a broom, repeatedly calling it a revolution. They then all agree that it was all just an illusion, and that none of it really happened. They later go to find Takashi on his own, holding off four zombies in his sleep, dreaming that each was one of the girls wanting to make love with him. After the credits, it is explained that there was a tunnel connecting the island to the mainland, hence explaining why the zombies were able to reach the island.