1st season is a mix of both couples, 2nd is main couple, 3rd all about side couple and their past, 4th (last season) should be more focused on main couple
Actually, I don't think this story has a side couple. Iirc, the author said that both couples are the main ones. This story really is about 4 people from the start. It just so happens that San and Eunjae was introduced first to set the pace of the story.
Theres no side couple in this story. All 4 of them is the main characters. Its just happen the first pair is the starter
i stopped reading this somewhere in the first 30 something chapters and then every time i checked it seemed like the main is no where to be seen, did they become the side couple? are they still the side couple after 4 seasons?