Well the darkness of this sequel is compensated with cute and innocent looking chibi art style. We have beloved characters who died and a villain with no soul who is just fighting for his survival. Well at least we have a happy and saccharine ending.
Have you guys heard of a game called Final Fantasy Type-O, it seems like it had a lot of bloodshed in it. This game was about sending children to war, so that is pretty bleak I would say. I think this game was only available in Japan, but you can now buy it in the states?
The main villain is not truly evil. He have no soul and all the bad things he did is for survival. He wanted to stay alive. The game also have genocide. Try to google what Genocide memes, for a game with cute chibi characters genocide is something you wouldn't expect. The disk 3 and 4 of this game have most of the dark moments.