I met my boyfriend's sister for the first time and fell in love with her... When I was in the kotatsu, the girl kept clinging to me! Taking advantage of her boyfriend's blind spot, she secretly fingers him with fingers covered in aphrodisiac and something strange happens! Even though I hate it, I lose my mind when I keep getting made to cum! In search of even more pleasure, she begs for more aphrodisiac! She becomes addicted to lesbian orgasms that she can't experience with her boyfriend!!