Hiroki and Mayu have been dating for three months. They've been on a number of dates, but they've still never even had a proper kiss. Mayu is getting impatient with Hiroki, who keeps showing no signs of making a move, and half-desperately and embarrassedly, she tells him how she feels, but the stubborn two end up arguing... but in fact, their lower bodies are reacting in completely opposite ways...!?