Unfortunately Gray is quite mistaken about the experience thing considering how much time he's spent in Genesia fighting powerful foes and growing in terms of tactics. Not that he's doing anything but moving on battle instinct alone obliterating everything in his path not even knowing that with each pixie destroyed the situation on the surface was getting better.

But then he finally reached the main chamber. His eyes take in the situation in an instant and before Gray can even say a single word to him, Natsu disappears in a flash of lightning. However his attack does not com from the front. Instead his fire lightning clad fist slams into Gray's skull brutally aiming to send him flying into at least one of the constructs guarding the fairy. "GRRRRRRRRRRRRRRRRAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAYYYYYYYYYYYYYYYYYYYYYYYYYY!!!!!!!!!!" He roared, his voice booming into the cavern rattling the very walls with his overbearing wrath.