Zhou Shuxing thought Gu Changan was a good boy, but it turned out that Gu Changan was white and black.
Many years later, Gu Changan realized that he had already fallen in love with Zhou Shuxing when he first met her.
Gu Changan knew that she was terminally ill and could not see the kind of illness that would kill her.
I don't know when Gu Changan started to have an uncontrollable possessive desire for his good brother's sister.
Intention: I love you