Bungo Stray Dogs, light novel Vol. 05: Dead Apple

An unexplained spate of suicides by skill users worldwide has sent the Armed Detective Agency on a search for Tatsuhiko Shibusawa, a mysterious skill user who may be connected. Each incident occurs under the blanket of a thick fog...just like the one descending on Yokohama. Kyouka Izumi and Atsushi Nakajima are hot on Shibusawa's heels when they run into their enemy Ryuunosuke Akutagawa-but this time, the three share the same goal: Find Shibusawa and save Yokohama from certain destruction!