Yes. If the rock in glade says you can't do anything further, that means you pretty much done everything already.
After defeating Viola, the PokeMart sells an Escape Rope for $0. It's also registered as a Key Item. Is that intended?
I know there's futa. When you start the game, there's something like a note beside your PC. You'll see options 1, 2, 3, 4.
1 is black shirt male, 2 is red shirt male, 3 is black shirt futa, 4 is red shirt futa