So like

Gladion-Elsa

Lillie-Anna

Lusamine-Hans (she wants to adopt Lillie not marry her)

Moon-Kristoff (they are so gay for each other)

Sun-Sven (can talk obviously)

Hau-Olaf

Kukui-There for comedic relief. Actually, everyone not listed. Just a town filled with Kukui.

Guzma-Duke of Weasletown. Grunts are his two guards.

And just keep everything the same. Make Gladion wear a dress. Sun is just, yeah.

MY BRILLIANCY IS BRILLIANT