Bungou Stray Dogs Storm Bringer (Summary Only)

What exactly is Chūya Nakahara-? The story of Twin Dark's "Sixteen" shall now unfold. It has been a year since Chūya joined the Port Mafia after ending the "Arahabaki Incident" with Osamu Dazai. As he aims for the executive position, a man named Paul Verlaine appears before Chūya, calling him his younger brother! "I w...