I know this game has multiple endings but is there a true bad ending? Is there an ending that's as bad as the bad endings in the Rosella games?

I consider any ending without the isles' inhabitants' conflicts resolved, with the genie defeated, and with the King and Queen still dead to be "bad". Alexander rescued Cassima, yes, but he's stuck on the Isle of the Crown in the midst of what amounts to civil war with no way of contacting his family, who for all they know think he died at sea.