This trailer isn't too old, it came out early this year or late last year...i don't recall. But, it was a father and son, they're demons i think. They are both soaking in a hot spring talking, the father is telling his son that life is about fighting and women (something along those lines). I completely forgot what the son said but he didn't agree with his father. They ended up fighting, and it was pretty much like dragon ball Z on steroids. The art style reminded me of God of War and Dante inferno.
That's all I remember lool, hopefully one of you guys can help me.