In a parallel universe of Bungo Stray Dogs, Ryuunosuke Akutagawa’s desperate mission to save his younger sister leads to him being recruited by the armed detective agency! (Source: Yen Press)

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...? (Source: Yen Press)

Mayuzumi Asahi is a university student in Economics who lives alone and from time to time cooks for his two buddies. He also is a Otaku for a magical girls show called "Ikai no Majoko" (t/n: "Magical Girl from another World") and collects figurines, posters and other merchandise of it. This show has a twist that reveals that the Attackers from another world are actually from 10000 years in the past, which makes him consider the show a masterpiece. One day a girl with a black cat on her shoulder breaks into his apartment and attacks him with a stun gun while he is doing the dishes. He accidentally cuts himself on a knife in the process. After that ordeal he goes to work at his in a shop for Anime-related goods. In the process of going after a female costumer who'd forgotten something he saves her from harassment, but gets beaten up by the harasser for his troubles. Luckily he suddenly summons a flaming car that runs the Attacker over? He understandably gets taken into police custody afterwards, who decide to drug and kidnap him to a remote location. After getting questioned by masked figures in black uniforms they decide that he is a Witch and burn him alive accordingly.

The story is set after the "Arahabaki Incident," and one year after Chuuya Nakahara joined the Port Mafia. A detective from Europe named Adam appears in front of Chuuya, with the aim of protecting Chuuya from Paul Verlaine, also known as the king of assassins. Paul claims to be Chuuya's old brother, and he vows to murder everyone Chuuya cares about. Based on LN Vol 8.

Eight years ago, Mochizuki Saya was raped and murdered by three juvenile delinquents. Protected under the Juvenile Act, the delinquents have been allowed to re-enter society... but Mochizuki Wakaru, Saya's younger brother, hasn't forgotten their crime and wishes for their punishment. Not long after his sister's death anniversary, he decides to look for those responsible, however, he is run over with a bike by one of the delinquents and hospitalized. While at the hospital, he awakes the ability to interact with other people's dreams and discovers that these interactions bring real-life effects. Knowing that his ability allows him to do a "perfect crime," he vows to avenge his sister... when night falls.

An anthology of Sword Art Online "what if" short stories by various authors and illustrators.

Official anthology featuring Bungou Stray Dogs characters by various mangaka.