Ridiculously unpopular opinion: Marie is fun. I already like Marie in the main story -- she's such a smug, persistently unlucky, adorable asshole -- but the Marie route, where the author is writing side stories depicting an alternate scenario if Leon stopped Marie from taking Olivia's place, is fantastic. The wincest (lol) romance is actually much more convincing than the main story. They banter, they chill, they bicker, they have fun -- you know, real couple things rather than awkward light novel knight-in-shining(black)-armor routines.