Ye Xichen has a friend who he grew up with.
But one rainy day that friend left without saying goodbye.
Seeing each other again was no longer the same as before. Ye Xichen stopped the friendly business with this strange friend.
However, a series of events that happened in the future finally offset their estrangement.
I was by your side before, now I am by your side.
Concept: Two teenagers grow up facing the rising sun in their fiery youth.