Anko Uguisu

Anko Uguisu (アンコ) is a side character in Call of the Night. She is a private detective who specializes in cases involving vampires, and has made it her mission to kill all vampires.

Ten years ago, she went by her real name, Kyouko Mejiro (キョウコ), and was a member of a literature club at the school Nico Hirata taught the night class of. She became Nazuna Nanakusa's first friend until her father was turned into a vampire, causing both parents to die and Kyouko to quit school and disappear.

Abilities
As a detective, she is skilled at finding information about specific people and even stalking them. Having spent 10 years hunting vampires, she knows of their weakness, which is being reminded of their human lives. Even without killing them, she knows of a few ways to survive an encounter with them. She knows how to handle a knife and tried attacking Akkun and Hatsuka with one (Although it was useless against the latter since he could make his body phase through it). Aside from that, she is also somewhat experienced in handling a gun, owning a revolver.

Trivia

 * She is the only known human that knows how to kill a vampire, as of chapter 140.