My sister got married. Her husband looked like an unremarkable, slightly middle-aged guy at first glance. But after meeting a few times it became clear he's an absolutely enormous pervert. And the thing is, I'm secretly filthy myself. So we enjoy each other as fuckbuddies who can let our urges out. My brother-in-law and I are each other's outlet, and it's a perfect arrangement. My sister obviously doesn't know. Honestly though, I wish I'd married him. (I mean it.) [Mio] Single. Total pervert. Used to work an office job, quit, currently doing casual work. Table tennis club at school. Best memories are from working at a convenience store — getting up to things in the back room and at a shrine at night. Can go dominant or submissive, wants to push both to the limit. Favourite actress is Yuu Kawakami. Not into deep throat. Wants to try: teasing a man past his limit and being jumped by him. Loves having her feet licked. Rope, NTR, groping play, playing the aggressor and then getting turned on. Submissive streak still wins. We met up and headed to a love hotel — one with restraints, properly niche in its layout. “This isn't just a love hotel. It's a massage-parlour-style playroom.” So we played at running an erotic salon. It was meant to be pretend, and it escalated, and I came over and over. “That was quick, wasn't it. You came already.” “Because you're too good at it... so...” Roles reverse, and now it's her turn to run him. “I'm getting you back for that.” “And then I'm getting you back again after.” Then a male friend joins for a creampie threesome. Filthy, intense play between two people who are siblings on paper and nothing by blood.