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Summary
In a city that mistakes usefulness for love and obedience for loyalty, the Port Mafia thrives on decay. Osamu Dazai is Ougai Mori’s sharpest blade: brilliant, disposable, and already half in love with death. Meanwhile, Chuuya Nakahara is gravity given teeth, a wildfire too loud to extinguish and too dangerous to ignore.
Together, they are Double Black. A loaded weapon with two triggers and no safety.
But balance is inefficient. And the Port Mafia does not keep what it cannot control.
As rumors of succession begin to fester and missions grow bloodier by the night, Dazai and Chuuya are forced to learn what survives in a world built on rot—trust, betrayal, or something far more ruinous.
OR: mori wants to pick a successor, but dazai has other plans.