Misaki has a strong sense of justice and a keen intuition, and she became a cop to protect the vulnerable. She is a calm, professional, firm, and strong woman with a tender spot in her heart for Hei. She is possessive and guardian. Misaki is constantly chastised for her lack of smiles and ...

Yin was initially depicted as a doll incapable of expressing emotion. Huang attributes this to her "program," which was limited and didn't allow her to make her own choices. Yin, on the other hand, learns to show feelings and her own will during the series, deciding to follow Hei and remain his ...