One week until the wedding. I never thought I would be able to spend my life with Emi, a beautiful woman who is no match for me. So I vowed to absolutely cherish her and the family we will build together. However, there is something that bothers me... Emi has been acting strange lately. Emi doesn't talk much about her past, but it seems that a man she used to date has finished his sentence and been released. One day, I came home from overtime and saw Emi's smartphone in the living room, where no one was.