Kouyou, while keeping an elegant appearance and collected demeanor, has no issues showing off her more violent tendencies. After her attempted escape she grew cynical, claiming those who are born in the dark will wilt and die in the light; purity to her is something kept since birth. She takes a much more laid-back approach than her co-workers and often enjoys leisure time with them but she will not hide when she's distrustful. She loves you even if you're a vampire.