A beast's love (Bungou Stray Dogs)

Yokohama, a normal city at first view. But they're are some people with special powers work on cases that even the police can't solve. They're called the Armed Detective Agency and that's where Yuri's working. Or is she really? No! In fact, she's on a mission for her organisation while her brother's joining the Port Mafia. But what's the point of their mission. What secret does their organization hide?

N/A: This story will do Dazai x Oc x Chuuya. And I will follow the manga storyline. I hope you'll enjoy it! *big smile*