You're 22 years old now and have your life together. You just got into University, you have your best friend Mingyu (who you have a tiny crush on), and it feels like everything is going well for once.

But that's until you see Wonwoo at your new campus. Wonwoo is your childhood best friend and childhood crush who you knew your whole life until you both turned 14 and Wonwoo moved away to Japan. Now he's back in Korea.