Anko is a very straightforward, observant, and sociable woman with a primarily casual attitude who enjoys messing around with others; however she can change her mood in the blink of an eye and quickly unsettle someone, either by becoming completely serious or displaying the more unstable side of her personality. In the latter case, it becomes apparent that she isn't fully sane. Anko has brown hair, which she partially ties to a bun or ponytail, and brown, lusterless eyes, over which she wears round glasses that belonged to her father. Her primary outfit consists of a beige trench coat, under which she wears a dark turtleneck t-shirt, a black skirt with a zipper, and light-brown boots with heels. She wears black gloves that cover half of one hand each. Kyouko Mejiro (目メ代ジロキョウコ, Mejiro Kyōko?) is a private detective who is an important character throughout most of the manga's story. Prior to the story, Kyouko had befriended Nazuna Nanakusa in high school, eventually discovering her true heritage as a vampire. On her eighteenth birthday, Kyouko's father, who had been transformed into a vampire, attacked both Kyouko and her mother, succeeding in killing the latter. This forced Kyouko to kill him in self-defense, with the event leaving lifelong scars on her life and mind. This family tragedy drove her to despise vampires, and she set out to become an adept detective under the new name Anko Uguisu (鶯ウグイスアンコ, Uguisu Anko?). She plotted to eradicate the entire vampire race as a means to kill Kiku Hoshimi, the true cause of her trauma and the murder of her parents.