Where Every Scroll is a New Adventure
This is just a theory by the way. Unless it was stated as canon somewhere but I don’t think it is.
Larry is Poppy’s dad, Rika’s his sister, and Hassel’s both Rika and Larry’s father.
Iono is Grusha’s big sister. Melony from Pokémon Shield is their aunt.
Katy and Brassius are cousins. They’re related to Clement from Pokémon X & Y