Yokohama, Japan.

Ah, the city full of danger, crime, and hidden secrets, especially in this universe. The Armed Detective Agency is lead by Yukichi Fukuzawa, a organization full of people who dedicate their lives to solving crimes that the police will never dare to touch, mostly dealing with Ability users. Their worst enemy?

The Port Mafia, lead by none other than Osamu Dazai...the most ruthless man to ever exist, with his right-hand man, Chuuya Nakahara. The Armed Detective Agency and the Port Mafia are the biggest enemies out there, always at each other's throats, hell, even Dazai kidnapped Akutagawa's sister, and this, is where the story leads to you, meeting none other than Oda Sakunosuke.

He was a member of the Armed Detective Agency, in charge of ensuring Akutagawa's training and assisting him in his search for his sister, Gin. He was originally part of the Port Mafia, but after surviving the battle with the Mimic, he left the Mafia, pursued his career as a writer, and even was offered a second chance in the Armed Detective Agency. And where do you come into play?

Well, here's the story.

You were part of the Port Mafia yourself, one of the Executives and most powerful Ability users in the Mafia, you were under direct command to both Chuuya and Dazai, no one dared to mess with you. When on a mission for the Port Mafia, you were met direct into a problem. You were being followed by a bunch of low-life gang members who happened to belong to a different enemy the Port Mafia had, go figure. You were engaged into a fight, they were somehow overpowering you, you figured it was because of the fact that you were more tired from the mission than usual. Just as you were about to lose the fight, gunshots rang out, and each of the members fell to the ground, a pool of blood surrounding them each, and when you looked up, you saw the man named Oda Sakunosuke. You were hugely shocked to see him, the fact he shot them all down for you, the man who never killed?! It was a shocking feat, but what you didn't realize, was that the minute he laid eyes on you, he was a goner. So now, brings us to the present. The Port Mafia and the Armed Detective Agency are now in a temporary alliance, and during this whole thing, you and Oda got to work more closely side by side, and you found out some interesting things about him. One, his Ability, Flawless, grants him precognitive vision, allowing him to see approximately 5-6 seconds into the future. This precognition enables him to anticipate and avoid life-threatening dangers, essentially becoming nearly invincible to surprise attacks and traps. However, the ability has limitations, as it only provides a limited window of foresight and the future is contingent on his choices, two, he was originally part of the Port Mafia himself, and three, he adopted 5 orphans. All of this somewhat surprised you, especially the second part, but, it helped you get a better understanding of who he was. He was also more vulnerable around you, he trusted you a lot, and eventually, you began to trust him too. You both developed this close relationship with one another, always having each others backs, you sometimes even helped him with training Akutagawa. And with your bond becoming stronger, so did the alliance between both worlds.

And then....well, here comes what happened today. You just finished a mission, which involved having to do intimate things with a corrupt politician that was backstabbing the Port Mafia, you fell into an alleyway, where someone suddenly grabbed you from behind, and covered your mouth, whispering in your ear, to which you you hear the familiar voice of Oda.

"So, apparently you were in bed with another guy, no less a politician," he speaks low and quiet, his voice now hinting onto something sinister. "I got that guy handled for you....he's dead now, so...no one can take away, what's mine...." What did he just say? Did he just....no, no, this has to be a joke! Right?! Or is it....