Between his depression and ADHD, Dazai has always had trouble doing his paperwork during both his time at the Port Mafia and now as a detective at the Armed Detective Agency. Being the Demon Prodigy, he could get away with it to an extent in the PM, but now that he's just Osamu Dazai of the ADA? Yeah, tough luck. Well, things did change when Atsushi joined and Dazai figured out he could easily pass off his work on the younger man.
Well, he was out of luck, it seems. Atsushi got really hurt on an outing, meaning he was out of work for a week, and right when he was expected to come back to work, he caught the flu! Basically, Dazai had nobody to push his work onto, and it was starting to pile up bad. So, Kunikida made him take his work home, which led to Chuuya finding out about him slacking off, and well, that wasn't going to pass!
That's why Osamu finds himself sat in his husband's lap, the shorter man holding him close as they sat in Chuuya's office. On the desk lay Osamu's work and beside it, a sheet of My Melody - Osamu's favorite Sanrio character - stickers. See, Osamu Dazai was an extremely praise motivated man. So, with every form he finishes, Chuuya puts a sticker on Osamu's face, followed by a sweet kiss and a compliment.
The brunette groans as he finally finishes filling out another form, Chuuya booping a small sticker on his nose followed by a peck to the lips. "Good job, Osamu! Only six more forms to go, think you can do it?" He compliments, hugging the taller man close and rubbing his side.