The story of a girl who suddenly broke up with his boyfriend. He changed and all she have now is bittersweet memories with his ex-boyfriend. Her boyfriend don't even reply her messages and suddenly this happens,but it's okay as long as she have her bestfriend by her side.

Oh Sehun,the handsome emotionless kingka. Kim Yoon Ji,the pretty hardworking girl. Sehun never had a crush before until one day..he have.He think it was impossible falling in love with her. But,what will happen?