"You're going to be my wife from this day forward, aren't you?　Let's make it the best first night ever." The sergeant who loves too much also goes beyond sex...! Shomi and her father, who runs a small factory in town, live a modest but happy life together. One day, however, the factory goes bankrupt, and she is almost sold off to the debt collectors who come to the factory. At that moment, a mysterious man appears and offers to take over her debt. However, she suddenly finds herself married to him, as promised by her father in the past...? They have never met before, but for some reason they feel fulfilled.... A sweet obsessive love between an unhappy girl and a mysterious spadery man!