I think there must be shadows of you and me in it.
Many years later, the protagonists of the story still remember the days when they lived together when they were young. Just like the protagonists of many stories, they lived the life they chose, but they dared not say it was the life they wanted.
Female characters: Chen Chao; Ou Xiaohu; Xintong; Yu Qian, etc.
Male characters: Bai Qing; Su Ziyang, etc. (Colored ones).