Just one ending. A fitting end for a story arc that is all about deceipt and manipulation. The player character really is just a useful pawn to the all powerful succubi. Plus it's kinda necessary for the whole story happening in the dreams to happen. Time loops and all that.
I get why the ending is the way it is, i instantly understood the Time Loop once the Minotaur joked about getting impaled... but they payoff just isn't there. In the first game there was a lot of post game content that served as a payoff in the form of several gallery scenes being unlocked.