Pokemon - The Future Of The Champion

Ash is having a good life while working at the Cerise Laboratory. His life starts to unravel as Cerise sends him, Goh and Chloe on a vacation to Alola. What secrets does the young trainer contain? Why does Ash look remarkably similar to the greatest World Champion? And why has Leon taken Red's place as the Champion?

On a side note, Giovanni is killed. Team Rocket has thus, disbanded. Why has Red been hiding from the world for all this time instead of coming back to his family? And since when did Ash have Mega Stones and a Key Stone?

P.S. - I don't own any characters. I own only my OC's and the plot of the story.
P.P.S. - This takes place after Lucario evolves.
P.P.P.S. - Ash is an Aura Master.