Michiru makes a pact with a demon to kill the rival classmate that is dating the teacher she is in love with herself, Mr. Kamata. She also asks to see the world destroyed simply to quell her boredom with life. Her memory of this pact is erased and eventually her wishes begin to come true. Her rival Hitomi is viciously murdered and people around town start getting possessed by demons as an evil chain letter is passed around from person to person. Michiru, her friend Yukiko, and her former teacher Kamata hide in the school, seemingly completely unaware that all of this was Michiru's fault to begin with.

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