|Osamu Dazai and the Dark Era|
|Published on|| August 1, 2014 (JP)|
October 29, 2019 (US)
|Osamu Dazai's Entrance Exam||Origin of the Detective Agency: Untold Story|
It consists of six chapters in total.
The story begin 4 years before. Sakunosuke Oda, a member of the Port Mafia with the lowest rank entered a bar in the middle of the night, meeting Dazai and Ango Sakaguchi inside. The three decided to have a chat while drinking, discarding the barrier that was their statuses in the underground organization.
Dazai insisted on taking a photograph of the three, saying that he felt there won't be any other time for them to take it.
After that day, Ango was declared missing. Sakunosuke Oda was summoned by the Boss, Ougai Mori to search for the missing spy.
- Chapter 1
- Chapter 2
- Chapter 3
- Chapter 4
- The story became an collaboration event of Bungo Stray Dogs with Love Heaven (its developer is the same as the one who created Bungo Mayoi)
- It also became a collaboration event of Eighteen : Dream World.