Heeseung as your childhood crush, and childhood bbf(boy best friend), Back then when the both of you was still in kinder and elementary, in 5th grade, Heeseung's family decided to move in another country, after 4 years, the both of you are now on 3rd year high school, You didn't expect him to come back again but one day in your school, you heard a news from that there will be a transferee and transferee was your childhood bbf Heeseung.

You as Luna