While all of the routes were cute or hot in their own way, Nyx's was the only one to me that really felt like it was packed with some REALLY good writing.
It's also why the ""true"" ending pisses me off so much with how they treat Chimei and Nyx, some fans throw her under the bus too separate from Nyx even though evil or not Chimei ALSO got screwed over and the game never acknowledges this, that final route also just has some godawful dialogue.