Su Jinse
The name means "like brocade", her character is innocent, kind and lovely, and she has the aura of koi. She herself often doesn't know how "prosperous" she is, she just thinks that everyone is very kind to her.
Xiao Jingheng
The eldest son of the Dingbei Hou Mansion is a family friend of the Su family. On the surface, he is cold and ascetic, but in fact he is deeply devoted to the heroine. He has been a "protective devil" for the heroine since he was a child.