I Figured it Out

He was there once. Now he's back and he is not going away.

After being acknowledged by everyone on the planet, XEn now has become bored out of his mind! For him, being famous has not been as amazing as it seems. But when Lord Mrgg decides to send him back to Earth for a second time, his life turns upside down. And worse.
Something happened to Earth. Something that has never been dreamed of by anyone, and XEn gets to witness it first hand. Along with tramatized Cali, XEn (posed as Aston) tries to fully grasp what has happend society and help rebuild our race. But can they pull it off? Or will they evolve to the cold-hearted killing machines they are trying to stop?