Then Heiduo really did spend New Year's at Professor Oak's house.
Just kidding, just kidding. It wouldn't take that long.
Professor Oak himself was too embarrassed to keep Heiduo at his house for too long. Unlike Pokédex Holders, who were essentially tools, Heiduo had brought his Pokémon over for research purely out of respect for Professor Oak's knowledge.
Even after all these days, aside from discovering that Lugia possessed immense psychic power and that its Energy Level storage limit far exceeded that of Pokémon at the same level, he had basically been unable to research anything else in such a short time.
Still, Professor Oak had to remember this favor.
Lugia was no ordinary Pokémon. In the ignorant age of the past, the people of Johto had worshipped it as a god. It possessed the terrifying power to split the Whirl Islands, once a single whole, into four major sections and countless smaller ones!
Though this Lugia was not, strictly speaking, the one worshipped by the people of Johto, it still held ample research value. Much of humanity's current civilization had originated from Pokémon.
Many medicines used to cure illnesses came from the bodily tissues of Grass-type Pokémon.
If Professor Oak could discover something on Lugia that benefited humanity's development, then as the provider of the research material, Heiduo would undoubtedly go down in history.
Likewise, Professor Oak, as the one who uncovered its secrets, would likely earn an even greater reputation.
When humans could not achieve immortality, history was perhaps the only proof that they had once walked this world.
But favors were favors. Someone had traveled all this way and even brought a gift; it would be unreasonable not to give something in return.
Professor Oak was already in his sixties, several times Heiduo's age. He could not