The plot and characters are what I love most about this game.  There are distinct personalities, but not overdone.  It has enough realism in the dialogue to help immerse you in the fantasy, and there are lots of interesting quests as well as a big finale (or many of them, depending on how you look at it) and then an aftergame that's a decent game in its own right!  The quests are fun and novel enough to stay interesting.

One humorous note, I didn't quite get it at the beginning when  I changed Mary's name to my wife's name and the game asked "Who is she to you?" I put wife and when it asked who are you to her, I put husband.  Later, when she said something line "I want to do things with you a WIFE should NEVER do with her HUSBAND!"  The light clicked on and I got it.  I don't think I've ever played a game with this particular fantasy, and I applaud that Siren wrote it like this.  It's very well done, and there is a lot of originality here.  So I changed her name to what it seemed would fit, and the game said "I understand" and it customized the dialogue to that fantasy!!

Originality in an RPG is hard to find because tens of thousands of RPGs have been written.  Quality can be hard to find as well because it takes a lot of time, effort and energy to code these--I tried once, but I don't have enough time, so I am grateful to those who do.   Thank you, Siren, for one of the greatest RPG maker games I've played, and I have played hundreds.