I got pregnant using my uncle's sperm. (Onodera Mayu NACR-615)

Zhenyou has a problem: she wants a child, but her husband always demands oral sex halfway through penetration… She clearly wants a child and penetration… Her husband has a younger brother who was once her classmate and has feelings for her. Zhenyou wants a child, so she uses his feelings to her advantage, inviting him over and seducing him to begin her pregnancy plan…