My brother-in-law is such a pervert! Our sexual compatibility is absolutely perfect! (Aizawa Mio MOOR-067)

My sister got married. At first glance, her husband seems like an unremarkable, somewhat middle-aged man. But after meeting him a few times, I discovered he's actually a super pervert. And I'm actually a repressed pervert... We're currently enjoying a casual sex relationship where we can release our sexual desires. My brother-in-law and I have become the ultimate relationship, satisfying each other's fetishes. Of course, this is a secret from my sister. But actually, I want to marry my brother-in-law (the truth). [Mio] Single. Super pervert. Formerly worked in clerical work but has quit; currently works part-time. Was in the table tennis club in school. My memories of doing lewd things in the warehouse or at the shrine at night when I was a convenience store clerk are. Capable of both S and M, and wants to try both. Her idol is actress Yu Kawakami. Not good at deep throat blowjobs. Desired play: Teasing a man relentlessly until he reaches his limit, then being assaulted by him. Likes having her feet licked. Bondage, NTR, slut play, and being retaliated against after playing the slut... As expected, she has a strong masochistic streak. After agreeing with her brother-in-law, they went to… a motel. There were bondage devices there, and the setup was incredibly extreme. "This isn't just an ordinary motel. It's like a men's beauty salon, a love room." And so began their erotic massage game. What started as a game gradually escalated… Mio was brought to orgasm several times. "Weren't you too quick? You went so fast." "Because my brother-in-law is too amazing… so…" The roles reversed. From this point on, she became a nymphomaniac. "I want revenge." "And I'll get revenge again later." She even called her boyfriend, Dalai, and it escalated to a threesome with no condom inside! This pair of super-perverted siblings, not related by blood, embarked on an intense and passionate play.