第 1 集: 血統遺毒疫情肆虐奪去成人性命，使兒童淪為吸血鬼獵物，眾人遂展開一場驚險的逃亡。

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An epidemic of unknown origin strikes mankind, killing all adults and rendering the youngsters at the mercy of the vampire kind. Four years later, Yuuichirou Hyakuya and his friends make a daring attempt to escape from the vampires, unaware that a mortal trap awaits them. (Source: Wikipedia)