"Pocket_Monster", or "Pokemon" for short, is an incredible creature in this world. Hundreds of years before the Alliance was formed, humans called these creatures very differently than they do now.

In ancient times, Pokémon were worshipped as a religion by humans. "Divine beasts", "gods", and Pokémon have even become religion-like beings, and they are active during the period when god worship was prevalent.

When the technological progress of human civilization makes it possible to compete with the Pokémon with the wisdom of their own race, the Pokémon are called "Elf" or "Demon Beasts". As "elves", they are agile and human, and live in peace with humans, while as "monsters", they have terrifying powers far beyond humans, and can easily put humans to death. Both are widely used, but their meanings are very different.

At that time, humans had not yet mastered the way to live with Pokémon. Only a handful of special people have the ability to manipulate Pokémon, and they are known as "Elven Messengers" or "Monster Messengers".

As the times evolved, ways to manipulate Pokémon were gradually discovered. Humanity's attempt to enslave Pokémon and use their power for themselves has certainly worked, but it has also made humanity's relationship with Pokémon worse.

Until one day, as the dazzling white meteorites into starlight, the flying beasts bring life to the scarred land. The humans who witnessed this scene were greatly shocked and regained their admiration and respect for Pokémon.

To commemorate this miraculous scene, the humans who witnessed the miracle changed the Western calendar to the Elven calendar, and the year on which the night of the meteor occurred was the first year of the Elven calendar. Since then, the relationship between humans and Pokémon has improved, and the term "elf" has been widely accepted, while the pejorative term "Warcraft" has gradually fallen silent.

Between 400 and 700 years ago, the technique of the round orange fruit ball appeared and was gradually perfected. The ability to pack Pokémon into small balls and carry them in your pocket - the monster in your pocket, "Pocket_Monster", or "Pokemon" for short, is the origin of the name that is now commonly used in the world.

At that time, the Elf League was renamed the Pokémon League decades after the founding of the country, which was the beginning of the "Pokémon" recognized by the world. On the other hand, the class that holds Poké Balls and controls Pokémon is no longer a "Pokémon Messenger", but a "Trainer" - not a "Pokémon controllator", but a person who "gets along with Pokémon on an equal footing and moves forward together".

History turns, and the human name for Pokémon records the changes in the relationship between these two very different species. Reverence for gods, disgust for monsters, or as companions, how to get along with these incredible creatures will be a question for mankind forever.