ตอนที่ 1: ทาคาชิ โคมูโรต้องเผชิญกับการระบาดของซอมบี้ที่โรงเรียนร่วมกับเพื่อนในวัยเด็ก เรอิ มิยาโมโตะ

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At the beginning of the semester, Takashi Komuro has a social separation with his childhood friend Rei Miyamoto. When he goes outside to mope, he witnesses a zombie, known as "them", attack at the front of the school. Takashi goes to warn Rei and his best friend Hisashi Igo, who is dating Rei, and escapes with them just before news of the attack spreads across the school, causing panic. The three run into Mr. Wakisaka, a teacher turned zombie, that bites Hisashi in the arm before Takashi kills it by smashing its head. They barricade themselves on the rooftop to witness Self-Defense Force helicopters flying in to combat the zombie outbreak in the city, oblivious to the carnage in the school. Hisashi begins succumbing to his injury and Takashi is forced to kill him, despite Rei's objections. Rei insults Takashi, and he almost leaves to face them alone. After she apologizes, Rei and Takashi embrace briefly. (Source: Wikipedia)