The sight of his son eagerly stroking his erect penis instantly dominated Yumi's heart. Yumi's womb was definitely aching for that penis. However, the two were blood-related parent and child. Such a thing could never be allowed. To cut off the lewd thoughts, Yumi invited her husband. But he was tired, ending things before Yumi could satisfy herself. At that moment, Yumi, overcome with loneliness, found herself lost in fantasy... being thrust repeatedly by her son's hard erection and filled to the brim inside...
