Collector's Edition Blu-ray available for a limited time only includes: 2 x Blu-ray Discs, 3 x DVD discs, Episodes 1-13 packed inside 14 mm Blu-ray Case, Plastic O-card and Rigid Collector's Box.

Four girls decide to stay over at school: the energetic Yuki Takeya, the shovel-loving Kurumi, the center of the group Y ri who brings everyone together, and the spacey school adviser Megu. However, through mysterious circumstances, the girls find themselves the final survivors in a zombie attack, and continue to live at the school.

Special Features:

• Clean Opening and Closing Animations