I was in the kingdom of Chrysalia when that fat guy said something about Pokemari, and how he has set up his battlefield so we can enjoy it and battle, but really I didn't enjoy it.
Pokemari is a story you can do after you've recruited 40 warlords or more in your army.
>Japanese: まろとポケマリ I and Pokémari
Unlock condition: Clear "Archenemies"
Description: The story of Yoshimoto's greatest invention, the ball game Pokémari, and his struggle to spread the joy he finds in it across Ransei.