Johto Region, Blackthorn City.
Far North of Blackthorn City stood a cave known as the Dragon's Den, also called Dragon's Cave.
It was called a cave, but a whole other world lay within.
Beyond Dragon's Cave lay a valley, with cascading waterfalls, murmuring streams, and lush vegetation.
This, too, was considered part of Dragon's Cave.
The Dragon Tamer Family had guarded this place for generations, and it was home to many species of Dragon-type Pokémon.
There was the Dratini line commonly found in Kanto, along with Axew from the Unova Region, Bagon from the Hoenn Region, and even Goomy from the Kalos Region...
Naturally, Dragon's Cave had not housed so many Dragon-type Pokémon at first.
But exchanges with various regions, such as working with the Dragon Village in the Unova Region to introduce Axew and bringing in Goomy from the Kalos Wild Area Reserve...
Had greatly diversified its Dragon-type Pokémon populations.
After years of introducing new populations, countless Dragon-type Pokémon lived in Dragon's Cave, enjoying happy lives under the Dragon Tamer Family's protection.
Of course, in return, they had to entrust their offspring to the Trainers' children to raise.
Outstanding younger members of the Dragon Tamer Family, such as Lance and Clair, had all obtained their own starter Pokémon from Dragon's Cave.
As the saying went, once bellies were full and bodies warm, other desires followed...
Offspring were the last thing Dragon's Cave lacked.
Even ordinary people who were not descendants of the Dragon Tamer Family did not find it particularly difficult to enter Dragon's Cave.
If they defeated Clair at Blackthorn City's Rising Dragon Gym and earned the Rising Badge, the elders of Dragon's Cave would generally allow them to visit.
But taking a Dragon-type Pokémon away from Dragon's Cave required its parents' approval.
Alternatively, if a Dragon-type Pokémon