You can start a new game by selecting the "New Game" option in the Main Menu screen, but you won't be able to save your data/progress.
if you want to delete your saved data press UP, SELECT, and the B Button at the same time, then select "yes".
Chat with our AI personalities
to restart you press start a new game
To delete a saved game to start a new game on the title screen hold up+select+B and it will ask if you want to delete the save file.
You start a new game and start over.
hit new game
On the main menu, before you start the game, there should be an option that says "New Game" or something. Click it and play. Then, when you're done, just save that game and it will override your first one.