Not sure what flaws you want per se but...
1. My Liberation notes- Pretty much all the characters confront things about themselves that could be considered flaws at some point.
2. Inspector Koo- FL is kind of broken and eccentric. They don't shy away from her alcoholism, lack of hygiene and lack of interpersonal skills.She was basically a hermit which isn't always bad but they highlighted FLs flaws the whole show