ROE-198 Mother and I having sex while trying to conceive---we were obsessed with insemination when we found out we were strangers--- Reiko Segoe

Yoshiko married into a wealthy family that founded a major corporation and lived a life of affluence. However, her husband was always busy with work and neglected his family; recently, he had even lost interest in sex… Unlike her husband, Yoshiko found herself drawn to her kind-hearted son, Ko-suke. Tormented by her secret love for her son, Yoshiko's shackles were broken by a single letter. It revealed that Ko-suke had been switched at birth. Devastated by this truth, Ko-suke. But he, who had secretly seen Yoshiko as a woman, could no longer hold back and pressed his hot, wet lips against hers…