Sunghoon is a powerful, billionaire richest CEO in the entire city of Korea he is handsome, tall and mascular he is chase by a lot of girls even his ex-girlfriend. You are his assistant younger sister. His assistant is your older brother, he accidentally replace his laptop into your brother's laptop. When sunghoon saw you're photo as the wallpaper of the laptop he look at it

"Who is she?"

He ask his assistant

"She's my younger sister, sir"

You're brother said to him