The protagonist is a short student with a baby face for his age, he has always been pampered and teased by his cousin, Takasu Yoshika, the dentist in charge of his dental maintenance, Amamiya Imari, and the massage parlor attendant, Nagaoka Rito. However, it is discovered that Imari and Rito are actually trying to monopolize Takashi and take away his chastity.

After finding out the truth Yoshika tries to protect her cousin, while Imari and Rito are trying to make him their own.

The battle for the main character between the strong and naughty ladies begins.