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

But standing in his way is none other than the fearsome White Reaper of the Port Mafia-Atsushi Nakajima. As darkness and light face off, what fate awaits the two…?

In exchange for their assistance in tracking down his sister, Akutagawa must fulfil a condition set by each detective agency member. For his first trial, agency member Kenji Miyazawa proposes they compete in...rice planting!?