"Who's going to insert it?" "I'm not playing the female role." Rei, the wild pheromone man, and Megumi, the refreshing handsome prince, are both employed at the same sex service, with Megumi being the most popular and Rei the second, and they are mortal enemies who simply don't get along. Then, they receive a crazy request: "I want to see the two of you having sex!" Rei tries to refuse immediately, but the conditions are so good that he ends up accepting...? A mount war between two tops, with men's pride on the line, begins now!