Bungo Stray Dogs, Vol. 1 (light novel): Osamu Dazai's Entrance Exam (Bungo Stray Dogs (light novel), 1)

Doppo Kunikida is an idealist and a straitlaced detective at the Armed Detective Agency, an organization that takes on dangerous jobs even the police wont handle. Everything in his life is going just as hes planneduntil one day, hes paired up with the agencys newest hire: a suspicious, eccentric, suicide-obsessed man named Osamu Dazai. Their first case together turns out to be far more complicated than Kunikida anticipatedand it looks like the detective agencys sworn enemy, the Port Mafia, is somehow involved, too! Set two years before the events of the manga series, this is the tale of how two seemingly incompatible personalities end up forming the partnership that has made them one of Yokohamas top detective duos!