Owlphibia AU: Brought to a Boil

Not the author, Instead of Earth, Anne, the Plantars, Maddie and Olivier find themselves on the Boiling Isles, where Oliver grew up under his mother's watchful eye. Now they must adjust to life in the Demon realm, while figuring out how to stop Andrias and helping out their new friend, Luz Noceda. Future Lumity and Edraine!