* Based on a light novel series written by Kimura Shin'ichi and illustrated by Kobuichi and Muririn.

After the epic last battle, looking back on a day at a huge indoor pool complex Aikawa Ayumu, Orito, even Shimomura and most of the girls — necromancer girl Eu, Haruna, Seraphim, Kanami, Taeko, and Mael Strom — take a well deserved day off.

But Haruna is determined to find Nessie (the Loch Ness Monster) in one of the many pools, and Eu confirms this to be an exciting urban legend. It could all be such a peaceful day for Ayumu, were there not so many female distractions.

— written by foo2

Note: Special DVD bundled with the volume 10 of the light novel, theoretically episode 0 of the TV series.

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Prequel: Kore wa Zombie Desuka? Ee, Kore ga Saishuukai Desuka?
Sequel: Kore wa Zombie Desuka? Of the Dead