an ntr story that started when i bragged to my best friend that "i'm having sex with my girlfriend 5 days a week". my best friend, with a psychopathic streak, thought purely that "the remaining 2 days are a waste" and "let's raise her sensitivity in 2 days for my friend's sake". rin was bewildered by her boyfriend's best friend's extraordinary actions, but accepted it, had her portio developed, and became addicted to the untried vaginal orgasm...