Bungo Stray Dogs Side Story: Yukito Ayatsuji vs. Natsuhiko Kyogoku (light novel): Yukito Ayatsuji vs. Natsuhiko Kyogoku — Kafka Asagiri

Yukito Ayatsuji, a brilliant investigator known as the Homicide Detective, has a skill so deadly that he is assigned a minder -- rookie Special Division for Unusual Powers agent Mizuki Tsujimura -- to monitor him. And when Ayatsuji is tasked with solving a murder case, who should be pulling the strings behind the scenes but his archnemesis… Natsuhiko Kyougoku?! As the stakes continue to ramp up, so too do the mysteries. In this battle of wits between a sorcerer and a detective, it's trick or be tricked!