Shinichi, Tatsuya, and Makoto live in a provincial town. They are all friends and 25 years old. Even though they only think about women and sex, they are all still virgins. To change their lives, they set up a plan to have sex.
Ichiko Sakurai, a 30 years old novelist, has a crush on Saotome, who is only in his twenties. This caused a heated discussion between the 5 personas controlling Ichiko's brain every time she is around Saotome.