@QueenKumQuat her main goal seems to flip back and forth as she struggles with her wish for a comfy life and family and her duty to the Goddess. The seeing the Priest is her best way to get closer to both goals without having to chose one right then and there. Though I'm worried she will lose...
... I am torn between the cuteness of it all, and the dark underlying premise of being a soldier for the humans and dying because the Princess sold you out for some freaking takoyaki.
@Kurieito
Not necessarily. If the Emperor is actually her sibling then it makes sense. Especially given the personality of the MC and the sibling's willingness to literally give her heart to her sister, then it makes more sense
It's gotta be the Imperial family. At the very least a Duke or close relative that stands to gain the Kingdom from the Prince's demise. Another option is for the Nobles who wish to limit the kings authority, but dealing with demons and killing their first born son, the Crowned Prince, is like...