Des:Reiko married into the founding family of a large company and lived a wealthy life. However, her husband only cares about work and does not care about family, and his sexual desire has been exhausted recently... Unlike her husband, she is attracted to her kind-hearted son Kosuke. Reiko is troubled by her secret love for her son, but her spell is broken by a letter. It turns out that Kosuke is the child he was mistaken for at birth. Kosuke felt sad about this fact. However, since he secretly regarded Reiko as a woman, he couldnt resist and pressed their wet and hot lips together...