Bungo Stray Dogs Dazai Chuuya Age Fifteen manga volume 1 features story by Kafka Asagiri and art by Shiwasu Hoshikawa.

Not long after Ougai Mori takes the reins of the Port Mafia, he orders a young Osamu Dazai to investigate an ominous rumor of something called “Arahabaki.” Whoever or whatever it is seems to have some connection to Mori’s deceased predecessor—and the new boss would very much like for the dead to stay buried. Along the way, Dazai runs into a gravity manipulator named Chuuya Nakahara, leader of the Sheep gang of youths. Together, the two will one day achieve infamy as the fearsome duo known as Twin Dark, but for now, they’ll have to learn to put aside their differences if they want to get to the bottom of this mystery… 

Bungo Stray Dogs: Dazai, Chuuya, Age Fifteen manga volume 2 features story by Kafka Asagiri and art by Shiwasu Hoshikawa.

At the behest of Mori, the boss of the Port Mafia, a young Dazai and Chuuya launch their investigation into the rumors of the previous boss's revival, as well as the mysterious “Arahabaki” that's somehow involved. The two's mission carries the utmost importance, for if the truth about Mori's predecessor gets out, the streets of Yokohama will run red with blood. Randou, one of the Mafia's subexecutives, is said to have witnessed the supposed god, but where will his information lead?

Bungo Stray Dogs: Dazai, Chuuya, Age Fifteen manga volume 3 features story by Kafka Asagiri and art by Shiwasu Hoshikawa.

Dazai and Chuuya have the culprit behind this case pegged at last, but what was the villain's motive? From the truth about Arahabaki to the mystery of the old boss's resurrection—all the secrets are finally revealed!