Uncle S and his M-type niece having anal sex: The forbidden sweet poison fruit - Mibu Koishaku (CMC-290)

Lianbai, a female college student with anal M tendencies, harbors a strong romantic relationship with her uncle since puberty. Worried about her daughter's sexual desires, her mother arranges blind dates early on and hastens the engagement during her studies... However, Lianbai is forced to choose a slightly domineering and sadistic young man to appease her mother's objections. Led by her fiancé and uncle, she immerses herself in M-themed pleasures! These include spanking, vibrators, anal examinations, enemas, nipple manipulation, and being bound in bandages and restraints...