Mmm, I myself was thinking of something more along the lines of both an NPC and the MC showing interest in the same RO at the same time, and the RO having to choose between them. I think this can happen in Crème de la Crème, but I’m not 100% sure (because I care too much for the characters to pursue someone I know they like 
).
I definitely agree about there being no canon playthrough in these games (I think I wouldn’t be too interested in a game where it’s made plain what the author considers the “golden route” to be! Rather, all branches should feel equally developed).
Personally I’ve found that I don’t mind ROs romancing each other under certain circumstances in most instances, but I already wrote an essay on that in the Bitten! thread, so I won’t repeat myself here.