Hoshikawa Shiwasu

It's been roughly one year since Chūya Nakahara joined the Port Mafia, and he's got his sights set on an executive position. But as he makes plans to move up, a man by the name of Paul Verlaine—claiming to be his older brother—appears and vows to assassinate everyone he cares about! Now, Chūya must team up with Adam, a European A.I. investigator, to stop this lunatic before the storm swallows Yokohama once again…

In modern-day Japan, while brutal crimes occasionally dominate the news, Rakki, a high school student, is rescued by a delinquent just as he is being targeted by a quick-tempered group in his class. Right then, an "outrageous incident" occurs, and strange, unidentified men appear...!? The royal road dark supernatural ability battle serialized in "Afternoon" officially begins!

Not long after Ougai Mori takes the reins of the Port Mafia, his accomplice Osamu Dazai has a dreadful run in with Chuuya Nakahara, a boy known as the Sheep King who is capable of manipulating gravity. But when strange rumors about the mysterious being Arahabaki start spreading throughout Yokohoma, the duo must put aside their differences and get to the bottom of things. Before they achieved infamy as the fearsome pairing Twin Dark, Dazai and Chuuya were just boys. Was their first encounter a harbinger of hope, or an ill omen of things to come...?

What if the Port Mafia's Hellhound, Ryunosuke Akutagawa, had joined the Armed Detective Agency? Likewise, what if Atsushi Nakajima belonged to the Port Mafia? In the parallel world of Bungo Stray Dogs: Beast, fledgling detective Akutagawa's desperate mission to rescue his younger sister from the Port Mafia's clutches brings him face-to-face with the organization's fearsome White Reaper…a.k.a. Atsushi Nakajima. What does fate have in store for the two beasts in this alternate tale of darkness versus light…?\[4]