Yuko, a mother, goes to look after her son who has moved to Tokyo after becoming a working adult. However, after visiting her son many times, she has begun to love him as a member of the opposite sex. She knows this is not allowed. But... Yuko, troubled by the fact that she has crossed the line between parent and child that should never be crossed, distances herself from her son for a while, but... Unable to forget the sweet memories she has with her son, she goes to embrace him again this month...