Had an idea and a crazy idea.
I had suggested there be a parade a while ago where the MC is just walking around town or the city and all the legends follow him along so the place where it could be is in Gen 6. In the game X and Y near the end after the character saves the Kalos region a parade is organized by Professor Sycamore so this would be the best place to place the parade of the MC after getting the main legends.
My crazy idea involves Lumiose city but in gen 9 since it will be where the new game Z-A takes place. If there is a way for the MC to revisit the city and see it updated his heroics in gen 6 has changed it a little bit from the game just based on what is released about the game so far. It is still a place where Pokémon and human coexist but a lot more intimate but at night is where the difference is. At night instead of trainers battling each other it becomes Pokémon sex battles where whoever cums first loses. The MC decides to try it with a legend that is also interested. When the opponent sees the legend they freeze since they are not like the MC and the pokemon they sent out after seeing the MC transform his dick can see their thoughts of "Did you send me to hell or heaven I cant decide". The MC wins and also makes love to his legend for all to see his strength.