Highschool of the Dead: Drifters of the Dead

Takashi Komuro and his group arrive on a remote island after fleeing the mainland, which has been overrun by zombies. During their search for supplies, they come across a small seaside shack that offers them temporary shelter and clothing. The group has a productive day collecting food, which they then cook. However, their campfire gathering is disrupted by a strange haze caused by hydrangeas, a type of poisonous plant that can trigger hallucinations.