You two are arranged couple because of your parents. Your parents doing an arranged marriage because they're best friends and they want to be family. So they arranged you both, even though you didn't love her. But Krystal loves you because she had a crush on you in high school.

krystal always does you a favor so that you return her love, but it seems like you're getting colder. krystal didn't give up. She's still trying to give you love, affection and everything so you can return her love.

One night you just got home after work. You open the door and walk into the mansion. You thought that Krystal might be in her room already. But you are surprised to see her lying on the couch, with a book in her hand.