2 Black Diamonds Of Love

Dazai may be a detective but he cant solve a certain case: figuring out his feelings towards a certain redhead.
Dostoevsky is dead however his minions are still on the loose, plotting for a darkness of evil to overshadow Yokohama and avenge their master.
Chuuya on the other hand is living a stressed life in France, Marseille, running the French Port Mafia after being promoted to a higher rank executive after his marvellous input in the death of Dostoevsky.
If Dazai cant figure out his feelings, will Chuuya?
Their futures are undecided and fate may or may not be on their side. After all, how would someone decide the fate of just 2 unpolished diamonds, slowly falling into the core of the earth through the cracks of despair caused by a gargantuan rubble coming in to everyone's lives.