About 32 hours in, partway through Vholran's castle
So far it's done the classic Tales thing of having an incredible party dynamic in the midst of a rather mediocre story. For seemingly being the main antagonist, Vholran is dull as shit and has done very little with his limited screentime. There's still a whole lot of mystery involving Rena that I would imagine I'm maybe 2/3rds of the way through.
I did not get the impression that he was the main antagonist at all. In fact I figure he's looking pretty clearly like the "fake" big bad, Xillia style. I'm here as well and am pretty sure this area is the end of part 1 of the game.
I'm still betting that the actual big bad is the red jacket woman literally nobody will acknowledge exists that has been shown standing besides every single Lord.