A literary mother tied up her son's friend and made her cum inside her slowly, and she was filled with dirty talk.

Yuri (Sasahara Yuri) was a student who spent most of his time reading books and was nicknamed the bookworm. There was a time when she was promising a future, but she fell in love and got married, had children, and eventually became an ordinary housewife. One day, my son brought a friend home. Her young appearance was enough to ignite the sadistic desires that lurk within Yuri...