Beautiful mother Yū lives with her son. She has been feeling lonely because her husband, who is on a long-term overseas assignment, hasn't seen him in a long time. One day, her son's best friend Haruto came to watch a popular online streaming love drama. Haruto, who has had feelings for Yū since they were young, suddenly stole a kiss from Yū. Despite herself, Yū felt her heart pounding uncontrollably that evening. Later, she was pressed by Haruto again and had her lips stolen once more. This ignited the unfaithful desires she had been suppressing...
