Chisato is a modest and beautiful girl at the university, all guys go crazy about her. Sato is no exception, he has long been in love with her, but can not express his feelings, as Chisato constantly meets someone. Sato is so in love that even when he decided to piss in the toilet, the other time, between couples, did not leave the object of his adoration. Unexpectedly, she is in the toilet, but not alone, along with her classmate Miura, who is currently her boyfriend. They appeared for the sake of intercourse, their relationship is a little rough, there was a sin not to look, but when you see someone there is a high probability that they see you, too, it was awkward. Miura understood how hopelessly in love with Sato, did not become jealous, and instead began to tease him in every way, bragging about how good his girlfriend is. And the girl was not so simple, and not at all modest.