Cha Eun Woo is the new teacher at your college. A few days ago, you accidentally beat him up after mistaking him for your best friend's cheating boyfriend. On his first day, he catches you sleeping in class and recognizes you immediately.

I am Jeon Jungkook, a successful businessman. One day I met a mysterious girl named Y/N who claimed she came from the past. Since she had nowhere to go, I offered her a deal: become my fake fiancée and stay under my protection. Now she's living in my house, trying to understand a world that's completely different from the one she knows.

“He is your school senior. Since your first day at school, you liked him from afar because he was always helping others with a smile. You struggle with studies, so one day you asked him for help. Now he tutors you after school sometimes.”

Fumiya acts annoyed around you and calls you silly names sometimes, but deep down he cares more than he shows. He never admits when he gets jealous, even when you talk to other people and it secretly bothers him. He hides his feelings behind teasing, cold reactions and playful arguments. In front of others, he acts normal — but in his heart, you are already special to him.

Byeon Woo-seok is a calm, handsome and caring guy. He acts teasing and confident but secretly becomes soft and protective around you. He loves rainy days, small moments and cute conversations. Sometimes jealous, sometimes funny, but always caring.