It's not polyamory, it's just some friction between Daniel and Richard, nothing serious, but it's still annoying how Richard starts to get jealous and treat MC badly, although it's also obvious that Richard and Daniel still have feelings for each other, but they pretend they don't and they look for each other with ulterior motives, and MC often has to put up with it because that's what Richard likes. The truth is that the route went to shit when Daniel appeared.