Nihon

Nihon is a federal region-state that is comprised of eight separate regions around the nation. (Kanto, Johto, Hoenn, Sinnoh, Unova, Kalos, Alola, and Galar) It is currently lead by its president, Professor Samuel Oak, who also is the Pokémon Professor in the nation's capital city of Kanto. Nihon is best known for its various Pokémon battles throughout its eight regions via the various Pokémon Leagues, which in turn include 8 gyms, an Elite Four, and a Champion all per league per region. Each region also includes a Pokémon Professor, who is in charge of studying and regulating the study of Pokémon.