From the introduction: Sexuality defines Black Tokyo - enjoying wet pleasure with willing (or not) new lovers, exploring the limits of the body and the limits of morality itself are as important of challenges as slaying oni and battling Amakaze minions. Convincing a cute 19 year old bishonen to offer you his virginity is a function of social skills- especially Diplomacy, though less honorable and more sexually predatory characters can try their luck with Bluff or Intimidate.