Natsuki Koshimizu

Koshimizu was a High School Detective from Fukuoka, the capital of the Fukuoka Prefecture on Kyūshū, the southernmost island of the Japanese mainland. It is not known for how long exactly she has been engaged in investigative work; according to her own statement, however, she was a relative newcomer, with only 100 solved cases on her credit.[2] However it unaware how much of the background she gave at the introduction was made up to create her cover.