Might as well tack on Grave of the Fireflies to this list. Just got done watching it a few hours, and it is a good story. I believe it's based off of a real guy's WW2 experience in Japan, but of course changed some things including the ending. It's def not a kids anime, and has a few more graphic scenes. It's more story driven too, more of less a teenager and his kid sister living with constant shelling and the loss of their family, and having to live in the side of a mountain. Don't wanna give anymore away, but it's not a bad movie by any stretch (not one of my top 10 or anything, but not bad).