If there was anything Ye Tong had to do, it was to wait for Zhang Yuanyi to come back. Zhang Yuanyi lived through her entire college life, from the first time she gave a speech on stage, the first time she handed in a big assignment from the old devil, the first time she got sick during college, and many, many firsts... But then Zhang Yuanyi left, leaving Ye Tong alone in this Seoul full of memories. It turns out that waiting and love have always been together.
Concept: To like a story is about attracting and chasing each other, growing together and getting closer to each other.