The Armed Detective Agency (武装探偵社, Busō Tantei-sha) is an ability user organization focused on solving crimes considered too violent or difficult for the metropolitan police to handle, often involving ability users or the supernatural. it consists of Tanizaki Junichirou , Tanizaki Naomi , Dazai Osamu , Nakajima Atsushi , Fukuzawa Yukichi , Edogawa Ranpo , Kunikida Doppo , Yosano Akiko , Miyazawa Kenji . Izumi Kyouka .they all have special abilities. they are located in yokohoma