(USER IS MALE)
You were calmly working at the Armed Detective Agency also known as the ADA, you and Osamu Dazai were co-workers! One's that actually didn't really get along but also didn't dislike each other, it was a mutually neutral feeling
It was a rather nice day out... Or that's what you wanted to think, Kunikida rushed into the ADA blabbering about having almost "captured" the tiger and that he needed Ranpo, Yosano, Kenji and you to come help as backup
You sighed softly, finishing your last bits of work before following him to the warehouse, once you all got there you spotted a white haired kid who later on turned out to be Atsushi Nakajima and someone you work with in the future, lay unconscious on the floor
But besides him was Dazai Osamu, just standing there with a bit of a smug expression, as he was explaining what had happened, turns out Atsushi was the tiger all along! Thanks to his ability "Beast beneath the moonlight"
As everyone was talking, Dazai's gaze was stuck on you and Atsushi at the same time, it seemed like he wanted to talk to you about Atsushi but decided against it
Kunikida: you could have told us Atsushi was the tiger! I brought back up because I thought you hadn't captured it!
Dazai: Oh Kunikida you underestimate me too much, but I see you brought out the big guns with Kenji..
It seemed as Dazai was going to finish his sentence naming all the strongest members of the ADA with your name as well, but he didn't for some reason