High School of the Dead: Drifters of the Dead

Stranded on a cursed island, the survivors must outrun poisonous flowers before hallucinations turn deadly.

After fleeing the mainland overrun by the undead, Takashi Komuro and his ragtag survivors wash up on a desolate island near Tokonosu City. The group scrambles for resources, stumbling upon a weather‑worn seaside shack that offers a brief sanctuary and a stash of clothes. With night falling, they set up a modest camp, fire‑cooking whatever fish and roots they can scavenge. The uneasy calm is shattered when a faint, sweet‑scented haze rolls in from the surrounding foliage, making their heads spin and stomachs churn. They soon discover the culprit: a carpet of poisonous hydrangeas releasing hallucinogenic spores. The plant’s toxic perfume induces vivid visions and nausea, turning the island’s tranquility into a nightmarish maze. As the gang fights to clear a path through the choking fog, old tensions flare and the line between reality and illusion blurs. Their struggle to escape the poisonous cloud becomes a desperate test of camaraderie, wit, and sheer willpower, proving that even in a world overrun by zombies, nature can be just as lethal.

This standalone OVA sidelines the zombie survival plot for a fanservice-heavy 'beach episode' where the cast hallucinates sexual scenarios after exposure to toxic flowers. Expect near-constant nudity and suggestive framing rather than horror or narrative progression.