It's illegal how adorable Nils is. I know he's not a romantic interest like Emrys or Iris, but it's so refreshing how kind and gentle he is. His "battle" side is cool, too. He even does his own cooking! For a cat, no less! If Aarya was romancing the Seniors (not the Senior Alchemist, obviously) instead of the royal heirs, then I would 100% do his route. :)