The stories are situated to a research laboratory where the people who are alive and not infected by the disease try to survive while an overwhelming amount of zombies roam around the research facility making it impossible to escape (from ANN).
Includes:
1) Yours, Even After Death 「� �後も君のもの」 by USUI Ryu
2) That Man, Dating a Mortal 「その男、� �に損ないにつき。」by CHIHAYA Hino
3) Bottom of The Pitch Black Darkness 「真っ暗闇の底の底」 by HOHAGI Aki
4) Dead Dead Love Alive 「デッドデッドオアアライブ」by KIMURA Hidesato
5) The Man who Died Twice「二度� �ん�� 男」 by Kashio
6) The Last Human 「最後の人間」by KATOH Muw
7) The Two of Us & Clear Weather「ふたりぼっち日和」 by MACHINO Suteinu
8) Zombie Cycle 「ゾンビサイクル」by Homerun Ken