Floating Islands

The Floating Islands is a location in Rotom's adventure that's ruled by Champion Pikachu. The islands have a kahuna system with 4 islands

Ranchi Island
Ranchi Island is where Dr. Shellos's lab resides, and is the entrance to the 4 islands. This island's kahuna is Torterra.

Townsend Island
Townsend Island has a church that the kahuna and the queen resides in. The island's kahuna is Queen Gardevoir.

TreeTower Island
TreeTower Island, as the name implies, has a lot of trees, leading up to a big tower, where the kahuna waits. The island's kahuna is Gastrodon.

Satanic Island
Satanic Island is the birthplace of Arceus and Darkrai. Their mother still resides there as a ghost. The island's kahuna is Cofagrigus.