Yui who has been widowed with her husband and raised her son by herself. One day, she is asked for her body by her male friend whom her son brought. She was Yui desperately resisting, but she actually reacted to her body. The door of the forbidden mother-child love of her son who felt "woman" to her mother when he saw her being attacked by a male friend, and her mother who lost her husband and could not handle her body. is opened.
