Y'know what, I like this ending. everyone seems happy, natsuo didn't abandon rui and haruka and hina got some love. Liked that cheeky little bit of 4th wall breaking and the LOTR ending. All in all an alright ending. 
Oh and all the raging rabid brainlets in the comments are fucking hilarious, this is how the author ended it, deal with it. Create a fan fic comic or some shite if your that devistated and apalled by the ending.