D&D has been successful because it was an adult game written by adults for adults. Read the 1st edition DMG and you see not just a 30+ year old writer, but a 30+ year old writer whose fondness for military, mythological, and historical esoteria makes him seem even older than that. EGG was a grognard in both the old and new senses of the term write from the time he published the game. You don't out grow military, mythological, and historical esoteria easily. You grow into it and with it. Getting the kids on board is the easy part. Keeping them more than a few years or a few sessions is the hard part. I love the look of anime. But I find I have a hard time retaining my enthusiasm as a I age. So it is with the style of gaming 4e seems to promote.
Naruta? I suspect you out grow that as painfully and easily (and all the more painfully because it is easy) as you outgrow 'Gatchaman', GI Joe, 'Land of the Lost' and all the rest of the stuff I thought was cool as a kid. It might not seem like it at 20 or even 25, but come back and talk when you are 30.