Didn't want to add this in case I was remembering wrong, but just in case it helps, although take it with a grain of salt! I think the father was depicted in an excited mood that he was about to meet his son's lover. As he walks into the cafe he has to go up a flight of stairs to the second floor to reach the meet up location. Sat at a table there the couple were in their seats waiting. Now that I'm thinking about it more I believe they did all in fact sit down properly trying to talk before a fight broke out. I think when tension rose cutlery even got tossed in that tropey fashion. More specifically, I believe the top said something that grated on the father's nerves which caused him to snap and lead to the fight. This might not all be entirely accurate but hope it adds some context~
I was rereading Roses and Champagne and was thinking how I was disappointed that the scene where Leewon's father discovers his son is dating Caesar was never fully illustrated. That thought then brought forth a vague flashback to a similar scene. Although, I can't recall what webcomic it's from at all Very loosely, it goes along the lines of the bottom formerly introducing his father to his lover, the top. This happens in a cafe I believe and when the father and top meet a violent fight breaks out. This is because the father disapproves of the top. I forgot the exact reason, but may have been because the two are enemies or that the top has a bad/dangerous reputation. There might have also been a brief discussion between them all sat down properly at a table before this moment, but during the flight I think even subordinates of each of the individuals may have joined the fight. Does anyone recognize this scene and what webcomic it's from?