Be a body and the Kokoro for the woman from the girl period. The puberty third when the girl whom anyone experiences is in danger. The dangerous situation that normal Girls experiences. Between the same school years, there is group announcement, and gather in the house of the boy of the same group in Houkago. Alice and the boy who arrived slightly early. Be late a little, and another boy comes over, but the communication that does not have this enters other people on sudden business on the telephone. Other; should come, and the classmate does not have this. There is a phone call, and the boy who came later goes home on the way. Become two people….