Someone in the comment section said the following and I will stick to this imagination "I'd like to think Miyazawa and Katsuura have just started dating after K drunkenly confessed to M at an afterparty. M just went along with it cuz K's nice and kinda cute. Of course, M doesn't have any real feelings for M at this point but gradually he falls for K too and their relationship progresses~"
They are in a relationship and work together. Not much to the story since it was just one interaction at work when they both talk to their boss. Yet it excelled at what it was going for. Set up the personalities of all 3 characters up and the world they live in for the company. Did what it was it needed go in fleshing out some characters in a short period of time. I commend it. 9/10