Seems obvious to me that the princess is just a bit too righteous and this "trusted subordinate" is the bad apple. This is assuming that the prince and prime minister themselves are not evil in some way.
Here are a couple of English corrections for the first page:
1) "What happen?" should be "What happened?". She's not trying to reference Zero Wing.
2) "from the crown prince" should be "of the crown prince". Because she is asking whether she is "afraid of" him.
@WhimsiCat Well, my issue isn't that I want to know spoilers, but that I want more now and the novel translations, which are normally a source to get more story, are woefully behind.
Hopefully the next group to pick this up will change his name back to "Rook", as it is supposed to be. (He chose the name to match the chess piece, just like his previous name "Bishop") Also, "about to depart" not "about to departure".
Wow, what a disappointing ending. Granted, I'm glad they didn't rush some resolution, but it's frustrating that this was cancelled. I guess I have to just continue with the novel. Does anyone know where this arc is in the novels?