This video digs a little deeper into the history of Kitakami, which is the region that came with the Teal Mask DLC for Pokemon Scarlet and Violet.
You can watch the video here: The story follows Pecharunt, which is a Pokemon that can create something called Binding Mochi.
The official Pokemon YouTube channel has posted a video detailing the story of Pecharunt.
The player could hear something like this story through The Teal Mask, though a slightly altered version. Pecharunt’s story draws heavily from the legend of Momotaro.