Husband, please forgive me… I was assaulted by my sister's boyfriend. (Sakurai Asami, ADN-406)

Rina comes to Tokyo at the request of her older sister Maya, who is married and lives there, and stays temporarily at her sister and her husband's house. Glancing sideways at her sisters chatting about their recent boyfriends, her husband feels a great responsibility to take care of a girl their age and is extremely worried. However, they seem oblivious to her concerns. Saeki, who drives Rina home from her date, greets her politely and makes a good impression. However, despite his seemingly serious demeanor, he is actually a womanizer and shamelessly takes a liking to Maya…