A certain day, Protagonist is called by the girl said to be the best pretty girl in the school, the consultation is accepted.

[I, it is threatened. If you cannot solve this problem, seem to scatter my shameful photograph in a school.]

One image sent to her smartphone. She alone in an unpopular classroom, the photograph that masturbated in the corner of the desk.

[Because amazing stress to answer everyone's expectation, secretly in the classroom and the toilet...]

Though it throbs in her secret, i challenge the riddle.