She was drugged at the dance, and he made a big deal out of troubled waters, but she disappeared after the one-night stand. At a friend's engagement party, they met again, but they didn't know each other. He is a well-respected nobleman, but she is the groom's ex-girlfriend. For their own purposes, they decided to get married. As they got along, the balance gradually became unbalanced. Is she falling into a sea of misery or is he digging his own grave? ! He gritted his teeth: What kind of woman are you? Why is it always so elusive to me? She is neither humble nor arrogant: Yes, that's the kind of person I am. I'll cheat on you when I'm in love, but I'll also work as a mistress when I'm not in love...