I still wonder what the whole thing with his son being the one that's going to kill him is about. Is it going to be like one of those Greek tragedy things where he kills him without realizing it's him? Does he get tricked by someone into doing it?
That's the gods "end game" plan. To actualize a great tragedy. But as all the stories that shows this kind of setup in the first 10 chapters or so, they won't succeed. Story is way too light hearted to end on such a bad note. I don't expect even a bitter sweet ending. It will be straight up happy ending.
I have been curious does Kakyu has already smashed his Lady? If i remember correctly he said in early chapter, demon doesn't do it that way and something about different sexual drive. Would Ars gonna have hybrid elf-demon little brother?