Modern AU where Kurogane and Fai find out they gotta work together or someshit, but they actually have met before.
It was like a year ago and the worst blind date of their lives.
Kurogane tries to play it cool and professional and act like they havent met before, but of course Fai wont let him do that.
Alternatively Kuro was on that terrible date with Fai’s twin bro and Fai is just pretending it was him. Why? Probably just because it is funny to see Kurogane so uncomfortable.