Here's why Kanto isn't immediately accessible on your Fly map:
* Story progression: The game intends to keep Kanto a "secret" until you reach a specific point in the story.
* Replayability: The game encourages players to explore Johto first, then revisit Kanto for a fresh experience.
Unfortunately, there's no AR code to bypass this design choice. It's part of the game's core mechanics.
However, you can access Kanto as soon as you defeat the Elite Four in Johto and receive the National Dex. You'll then need to visit a specific location called "New Bark Town" (your starting town in Johto) to access a portal that will take you to Kanto!
Enjoy exploring both regions!