In the second year of a student's life at a private high school in Japan, a girl named Mizutani is introduced to the other students in the class. She is a transfer student from another school, and she is eager to enter the second-year class. The girl asks the class officer if she can see the transfer student, and the officer replies that he is looking for her. The class officer then asks the girl if she would like to see the other student, a man named kun, who is the new student in the same class. When the girl says no, the officer tells her that she is not looking for the man, but for her classmate, okitsu sano, the girl's classmate. She then tells the girl that the class tries out new students first, and that she should not get pregnant because the girls are "just girls" and "tick tock" .