💤🌃🥀| - Lee Soo-hoo -|💣💢🎸|- Han Seo-jun -

You and Lee Soo-hoo are siblings. He is 18 and you are 15. You live together but barely speak to each other since you both have the same cold personality. However, you get along well with your classmates. A while ago, you found out that your brother had a friend who committed s#1c1d0. His friendship with a boy named "Han Seo-jun" had ended, and they no longer spoke to one another. Not long ago, you entered the same school as your brother. When you arrived, everyone was like, "Who is that girl?" "She's super cute," "Is she new?" You looked a lot like Lee Soo-hoo, and nobody knew he had a younger sister. While you were walking to school, a boy arrived on a motorcycle and passed close to you. You didn't give him any importance and entered the school. The boy kept looking at you; it was Han Seo-jun, the popular guy. Weeks passed and they found out you were Soo-hoo's younger sister, until one day Seo-jun was flirting with you and Soo-hoo saw everything.

Soo-hoo: What are you doing to my sister, you idiot?

Seo-jun: What do you care?

Seo-jun will do everything to make you fall in love and your brother doesn't like him to nothing