Mother wants to cum with her son!

Yumi raised her only son on her own. His son, who has been hired for a top-class company and has become a man who is not embarrassed no matter where he goes, is ordered to be transferred to afar. Yumi, who had never thought about living apart from her beloved son, was unable to endure the pain of accepting this fact, so she began to thrive her feelings on her son, and devour each other's bodies with her son, who had accepted her.