Over the years, Song Hyun loves to be cautious.
He thought he wouldn't wait for her reply until he left.
She said, wait for me, I will definitely come to you.
But in the end it was he who failed to keep his promise.
But he didn't know that Song Ying believed that a person would never like other people easily in his life.
Even though we are thousands of miles apart, many years later, I still only like you.
Concept: A story about childhood sweethearts growing up with each other