One of the Pokémon that appears near the grass surrounding the Trainer’s School is Zorua in Pokémon Ultra Sun and Ultra Moon. Because of this, there’s a theory that a kid at the school was replaced by a disguised Zorua. This theory is of course influenced by Zorua’s Pokédex entry in Pokémon Ultra Moon: If a normally talkative child suddenly stops talking, it may have been replaced by Zorua. To learn more about this disturbing side story, click here.
Source: Kotaku
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