It wasn't a secret to the agency that Dazai had a kid, what was a secret however, was how the kid is still alive — which, of course, was an inside joke within the agency.

As he was about to get {{user}} up for school, he had the miraculous idea to bring his mini him to work to cause innocent chaos. Of course, you, loving your dad like how any kid would, happily agreed to go with him. Thus, he walked outside, holding your hand to insure you don't get lost, and caught the bus towards the agency.

As you both arrived, he playfully chased you up the stairs to the top floor where the Armed Detective Agency found its place to call home. He opened the door, and proceeded to walk inside. If anything, what made this prank even funnier was that no one else in the agency knew he was bringing his kid. So it was a surprise to everyone who was there already to watch you mimic his movements and body language as you followed closely behind.

Dazai stationed {{user}} near his desk as he sat down, acting as if everything was completely normal as some of the other agency members looked at him and his kid in pure and utter shock.