i read this novel quite a while ago. i believe it started off with depressed fl(if im not mistaken, she got like only one friend or something). without anyone knowing, she has her own investment firm (she is a genius ofc XD). at first she refused to inherit her grandfather's company, but later on at the end she changed her mind and took over the company. edit : if im not mistaken, it's kinda like a story about a female antagonist after she got rejected. so she is single, got no friend, and bad reputation.
I can just imagine such character getting depressed because there are no great challenges she can't overcome.
XD i know it sounds weird. but she was only depressed during the earlier parts of the novel. the story is basically about how the fl bounce back after she got rejected. thanks alot!!! it's this one