These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Foe Yay: Rosalyn is the Hero, Stan is the Evil Overlord. They are constantly fighting and calling each other names, their destinies are bound by Classification they are supposed to be archenemies and kill each other in their Ultimate Duel, and even after getting rid of Classification and deciding that they don't want to fight for real after all, Rosalyn still chases Stan because her shadow is still pink and because she can't let him be "unsupervised".
Ho Yay: Plentiful, and not simply because this game has a relationship meter in which Ari isn't limited by gender. Stan is very...possessive of Ari, and some of the dialogue options you're given with him are downright cute.
Les Yay: Rosalyn and Annie can seem awfully close, though they have only one scene together.