Pwyll - Friendship with the Otherworld
The prince who traded places with the king of the Otherworld, learning its ways.
Pwyll ruled Dyfed and formed a friendship with Arawn, king of Annwn. By exchanging places for a year, Pwyll learned the ways of the Otherworld. His story teaches that the Otherworld can be approached with honor, creating beneficial alliances.
The king of this world and the king of the other need not be enemies.
Pwyll's story models honorable relationship with otherworldly powers.
First Branch of the Mabinogi