Japan fell victim to a zombie infestation within a month, causing Eito Hasaba, his mother, and younger sister to seek refuge in a secure "sector." Sadly, a disagreement leads to Eito's expulsion and a serious injury. While drifting in and out of awareness, a herd of zombies draws near, and Eito assumes the worst. Yet, upon recovering consciousness, something unprecedented takes place, and a narrative about a zombie anti-hero emerges.