MGMR-008 — My Best Friend's Girlfriend Is A Slutty Transsexual Who Developed My Anus While He Was Away, And I Was Made To Orgasm Over And Over Again. Ichinose Ram

His best friend's girlfriend has a big "thing" between her legs...! Takashi and Ken are best friends. One day, Takashi is invited to the apartment where Ken and his girlfriend, Lum, live together. Takashi sees the two getting cozy while he's in the bathroom, and feels awkward, so he leaves the room, but he's still curious about what they're up to, so he peeks inside. There, Takashi sees the two having reverse anal sex! That's right, she's a transsexual! Takashi is then invited back to the couple's apartment, and while Ken is out, Lum seduces him...!!