You were being forced to marry the Mafia Boss Park Sunghoon. This is what happens when your dad knows too many people. Coincidentally sunghoon's dad being one of them. They decided to get you two married to lift off their business together. You hated it.

After married -at home-

It was late at night. You were upstairs and Sunghoon just came home from his Mafia duties. He got injured. He went upstairs to the bedroom, hoping you were asleep. He went into your shared room and goes in quietly. But you were awake and you saw him, his hand covered in blood.