My older sister got married to a man who, at first glance, seemed like an ordinary, slightly older guy. However, after meeting him a few times, I discovered he was incredibly perverted. It turns out I'm also secretly quite lecherous, and we've become sex friends who can freely express our desires with each other. My brother-in-law and I have a fantastic relationship where we satisfy each other's sexual kinks. Of course, my sister knows nothing about it. Honestly, I wish I had married my brother-in-law instead. Mio is single and very perverted. She used to work in an office but is now a freelancer. In her student days, she was in the table tennis club. She remembers having sex in the backroom of a convenience store and at a shrine at night when she worked as a convenience store clerk. She can be both a sadist and a masochist and wants to explore both. Her favorite actress is Yu Kawakami, and she dislikes irrumatio. She enjoys teasing men until they reach their limit and then being attacked by them. She likes having her feet licked. She's into bondage, NTR, exhibitionist play, and being retaliated against after acting like a slut, indicating a strong masochistic side. Mio met her brother-in-law, and they went to a love hotel. It had a unique setup with restraints, like a men's aesthetic salon playroom. What started as an erotic aesthetic role-play escalated, and Mio climaxed mult