My girlfriend, Miu-chan, and I have been dating for two years. Lately, I've been spending a lot of time at her place, almost like we're semi-cohabitating, at her request. But unbeknownst to me, Miu-chan's older sister, Kasumi-san, also lives there. Despite knowing about my relationship with Miu-chan, Kasumi-san can't resist teasing me sexually... I'm starting to be drawn to this wicked, nympho older sister who's trying to steal her sister's boyfriend... #SeductiveNymph #SeductiveSmilingVillainess #RiskySecret #Whispers.