This game has only a single heroine to interact with, that's all the story is about.
Yukino has a daughter, Emi. One day, Emi brings her boyfriend to her house. But they have a quarrel and she leaves the house.... Yukino enters Emi's room and says to him, "Well, I'll teach you how to have sex...."
Main character Yoshizawa Atsushi has a strong fetish for pantyhose. He instantly fell in love with student council president Ninomiya Ais black tights, and joined the council so he could be closer to her. One day, he sneaks into the presidents office and successfuly finds her weakness. He blackmails her and starts to train her into his sex slave...