STARS-996 My Freeloading Stepson Cums Inside Me Every Day... My Body Feels a Sharp Sting, There's an Immoral Sensation, and I Might End Up Giving Birth to a Child - Natsume Hibiki

The story revolves around the taboo relationship between a mother and her freeloading adoptive son. Every day, the son ejaculates inside the mother's body, causing her physical pain while stirring intense feelings of immorality within her. She fears this liaison will ultimately lead to pregnancy and the birth of a child. The film delicately portrays the complex emotions intertwined with this distorted familial bond and desire, exploring the collapse of family ethics and the conflict with carnal pleasure.