A mansion stood in a corner of Viridian Forest.
The chilly Old Chateau was home to Agatha, the third of the Kanto Region's Elite Four.
Agatha's volatile temper meant she received relatively few visitors.
There was another reason, too. Agatha was a Ghost-type Elite Four member, and Ghost-type Pokémon naturally frightened more ordinary people.
What Agatha did not know was that Professor Oak had become a researcher precisely to change the prejudices in people's hearts.
Ghost-type, Dark-type, and Bug-type Pokémon, among others, faced discrimination among Trainers.
It was not just discrimination against their types. Individual Pokémon faced it as well.
Before anyone discovered that Feebas could evolve into Milotic, Feebas had suffered countless instances of discrimination.
Children who had yet to set out on their journeys also looked down on Feebas before learning that they could evolve into Milotic.
This was the state of affairs Professor Oak wanted to work hard to change.
Unfortunately, the prejudices in people's hearts were mountains.
Professor Oak had devoted decades to improving the Pokédex, hoping to help Trainers understand Pokémon properly.
Yet discrimination persisted.
As long as discrimination and prejudice against Pokémon existed, Professor Oak's work on perfecting the Pokédex would remain a long and arduous undertaking.
Blue had gradually begun to understand his grandpa, Professor Oak.
He was doing something truly meaningful.
Usually, the luxurious mansion housed only Agatha and Ghost-type Pokémon such as Gengar.
Today, however, the mansion, normally devoid of human company, finally had a visitor.
After ringing the doorbell, Blue pushed open the mansion's front door with a creak.
A chilly gust swept toward him. Shadows rose slowly from the floor, gathering into a Gengar who grinned goofily, baring his large teeth.
Although Agatha's attitude toward Blue was lukewarm, she would not go so far as to have Gengar attack