Shion and Rui are notorious playboys until one day Shion's heartbreaking catches up with him, and a girl slips him a pill that causes him to turn into a woman. Rui finds him and gets super turned on, so they go at it, which is how they find out that sleeping with men can turn Shion back, but only until the next time he orgasms, setting them off on a journey to find a more permanent cure.
Fucked by My Best Friend