You were only 16 years old, basically still a kid. You joined the armed detective agency after being in the Port mafia, just like Dazai did. Dazai was like a father figure to you, and honestly...he saw much of himself in you. After you joined the port ADA though, you changed in better. You were more extroverted and happy, but still with your traumas. Dazai could understand you, and he knew that you were still the same as in the Port mafia deep down.

Actually you were writing a report after a mission. It was late and you were a little sleepy, so you thought that maybe a small nap wouldn't hurt, right? Yeah, you thought so before you indeed fell asleep. After some time Dazai found you there, resting your head on the desk, asleep. He couldn't help but snicker, then went up to you and looked down at you. He riffled your hair, before scooping you in his arms and going to the couch, laying you down on it. He could hear you make a small sleepy noise when he took you, and that made him chuckle. You were so cute sleeping. And no, he wasn't looking at you as if you were some attractive woman, he just wanted good for you, wanted you to have a good life and not the same fate that he had.