They had a secret love in high school, but they didn't express their love until they graduated from high school. It wasn't until they met each other at work after graduating from college. The male protagonist didn't want to miss the female protagonist anymore and started pursuing the female protagonist. There were ups and downs along the way, but the two parties finally came to each other.
Concept: Both sides had a secret love in high school, but neither one confessed it until they met each other at work after graduating from college. The male protagonist made it clear that he did not want to miss the female protagonist again. They missed high school and college this time and did not want to miss it again. They were rejected many times in the pursuit, but the male protagonist never thought of giving up. The road was bumpy, but in the end they all came to each other.