Cresselia could not take them directly out of the Sinnoh Region. Bringing everyone here from Spear Pillar was already the limit of her abilities.
Even fellow Psychic-types like Gardevoir and Alakazam might not have been able to accomplish that, even if they were Pokémon at the Elite Four Class Peak.
"It's still early. Now we need to figure out how to explain our disappearance for an entire day and night—and how to get those two out of the Secret Realm." Once they reached an empty clearing, Xiao Ran addressed the group.
The Japanese authorities knew Apollo and Athena's identities. Although they had cooperated with Xiao Ran's group in the pursuit, they would not easily let them take the pair away. They would inevitably find an excuse to detain them.
Beyond that, there was the Pokémon League, Above the Nations. Although it was merely a global organization similar to the United Nations, it would not readily let the pair go either. If China wanted to keep them, it would have to arrange legitimate identities for them.
"Explaining the disappearance is easy. Just say we got curious and took a look around that Little Wooden House, then woke up here. Things like that happen all over the world. One or two more won't matter!" Xuan Yuan Tianyu said casually.
With Pokémon and the merging of worlds, mysterious disappearances followed by sudden reappearances were all too common. There had even been people in history who vanished for over a century, only to emerge looking exactly as they had before. But the world had changed beyond recognition, and they could no longer find a single person they knew.
So although the excuse sounded fantastical, it made sense and was convincing enough.
The real problem was how to get those two out without anyone noticing.