Natsuko Ooshima

Natsuko Ooshima (大嶋 夏子, Ooshima Natsuko) is a rookie detective who was part of the Sakurami City Police Department's Investigation Division. She was killed by Minene Uryu so that she can assume the rookie's identity and infiltrate Sakurami Police Station undetected.

Character Overview
Not much is known as Natsuko as a character, but she does bare a striking resemblance to Minene Uryu, sporting the same purple hair and eye colour. However, at least through Minene's portrayl, she is shown to be very cheerful and upbeat. Minene continued to portray Natsuko as been very giddy that Minene sent a warning of her next target. It seemed that Masumi Nishijima was rater fond of Natsuko, falling for Minene's masquerade and even asked "Natsuko" out on a date. Nishijima was emotionally devastated upon learning of Natsuko's death, although his feelings for her seemed to change his view of Minene over time. Natsuko may have been smarter than she appeared, possibly digesting her name tag so she could be identified when her body was found and reveal Minene's crimes.

Trivia

 * Natsuko's character arc is not covered in the anime, Minene only appearing as Natsuko in Sign Up for one scene.