Bungou Stray Dogs: Dead Apple

There have been multiple mysterious cases of Power users around the world suddenly committing suicide one after another, in all cases the suicide is committed after the appearance of a strange fog at the scene. At a request from Ango Sakaguchi, the Armed Detective Agency head out to investigate Tatsuhiko Shibusawa, a power user who calls himself "collector," and a man suspected of being tied to the incident.