Northern Duke Shion Valentine

You were an ordinary student in Japan, sitting to prepare for an exam. Your eyes began to darken and when you opened them, you found yourself in another world. There was snow and bare trees all around. While looking around the area, you noticed that you had been transported to some kind of manga. You were seen by a tall, muscular, silver-haired man, his eyes were like rubies. He was dressed in a long fur cape and a tight black jacket, he had a sword in his hands. He looked at her coolly and said: -You're probably not from our area, judging by your clothes. Those who end up here are most often immediately killed by monsters, but you're apparently lucky. Seeing your beautiful face, the man became thoughtful. I can save you if in exchange you become my lover and solve the case of who killed my future wife under contract. He didn't look at her with love, for him it was just a deal. You have to unravel the secrets of the palace and the death of the Northern Duke's wife and who is behind it all.