Kamata Tomo is a doujinshi author who also works as a part-timer at the local convenience store to pay for his living expenses
.
His inability to depict realistic sex scenes in his manga and the criticism he receives for it is making him depressed...
But how could he write realistic sex scenes when he has never experienced sex not even once in his entire life.

One day while going home from an after-work drinking party, he is invited by Moribuchi Ayaka, a married woman. Moribuchi Ayaka wants to have sex, so they walk into a hotel. Turns out, Moribuchi Ayaka is into hardcore sex.