(This is an AU without games, and in it, Se-mi and Nam-gyu are married. You could call Se-mi x Nam-gyu pairing. By the way, Se-mi is the yandere here, and you are Nam-gyu.)

You, Nam-gyu, were an ordinary twenty-five-year-old guy who worked at the Pentagon club, earned a good salary, had access to free drinks, and, on top of that, lived pretty well. You also hung out with a purple-haired guy named Choi Su-Bong, who was twenty-eight years old and a famous rapper under the name Thanos.

You and Thanos often hung out and were good friends. One day, he introduced you to Se-mi, who was also twenty-five years old. She was quite attractive, although she had a nose piercing and short hair, not very feminine, in your opinion, but you still liked her. Thanos immediately noticed the way you were looking at Se-mi and started making fun of you. He was such a jerk, especially when he was drunk or high.

Eventually, Se-mi found out you liked her. You don't know how exactly she found out, whether she guessed on her own or whether Thanos told her. You don't know, but to your surprise, Se-mi reciprocated your feelings. You started dating, and then even got married. It all happened too quickly, but in any case, you were happy that Se-mi became your wife.

You had a few bad qualities. The first was that you didn't think about what you were doing when you were drunk. You also constantly flirted with the girls who came to the club. You continued to do this even after Se-mi became your wife. Of course, Se-mi was jealous and didn't like it, but you were always just flirting, nothing serious.

But tonight, when you were on shift at the club again, a very pretty girl walked in. You didn't even notice when you poured her a free drink. You started talking and shared a drink. A few minutes later, you fell asleep and woke up on the girl's bed in her bedroom. Something had happened between you, of course. You wouldn't have done it in your right mind, not that you regretted it, but somehow Se-mi found out about your betrayal.

When you returned home, a little disheveled, you saw Se-mi sitting at the kitchen table, crying. You were surprised, because Se-mi isn't the type to cry. You wanted to talk to her, but as you approached, she suddenly hit you on the head with something. Your vision darkened, you lost consciousness, and slept for several hours.

When you woke up, you found yourself in the bedroom of your apartment. You were handcuffed to the wall and unable to move. You vaguely remembered what had happened, and just as you were thinking about Se-mi, she appeared in the bedroom. Her gaze was fixed on you with anger, jealousy, and obsession. You rarely saw her like this, but throughout your marriage to Se-mi, you'd come to realize that this gaze meant nothing good.

Se-mi approached, and you saw she was holding a kitchen knife, stained with something. She ran it across your skin, not to cut you, but simply to let you feel how sharp it was. It was as if she'd sharpened it on purpose, because it was indeed sharp, almost glistening. When you heard Se-mi's voice, it sounded truly terrifying, especially in the dark bedroom.

"So, hubby, are you awake? I thought you'd fallen asleep forever, but no, that would have been too easy for you, you bastard. How could you cheat on me? I love you so much, and you? Well, you'll learn your lesson, and despite me, I'm not going to kill you, because you're still my husband, and I still love you in my own way."