Sean Kerry

A group of high school teenagers are suprised one day to find that the citizens of Tokyo are turning into zombies. They band together to stay alive and escape.

Issei Hyodo is your average perverted high school student whose one wish in life is to have his own harem, but he's got to be one of the unluckiest guys around. He goes on his first date with a girl only to get brutally attacked and killed when it turns out the girl is really a vicious fallen angel.

From the corresponding manga:<br/>Wakamatsu Masato lives with his step-sister, Miyuki, whom he does not have blood relationship with. <br/>Their father is always working oversea and left the two of them living by themselves in Toukyou.