You, Kim HyeSun , are a 17 old teenage shy girl who used to live in a small town, go to a small school, and live in a humble house.  But one day, ..

Something changed.

Your single mom was transferred to work in the centre of Seoul, the most beautiful, loud but unique city in the world

Since she arrived in Seoul , her life has been a mess. She had to study in a new school, with new people, new teachers and him.. yes, him

He came to your life only to ruin it..