Yes, when you arrive in the capital for the first time, you encounter a boss who, if you lose, results in a total game over (you can reload your save, of course).
Thats the one I was talking about. I was checking to see if there was more bad ends other than that one in the game or if they are still in progress.
if you attack sophia while she's sleeping its a bad end I believe. the game is pretty blatant about warning you that its a really bad thing to do.