Soul Bonding

Soul Bonding is a traditional ritual that exists within Astrea.
The practice of it involves two Pokémon to travel to the Soul Circle. Once they arrive, they each take a blade of grass from the ground there, then tie it around a part of their partner. Popular examples include fingers, flippers, ears, or ankles.
Once this is done, legend says that those two Pokémon are now linked eternally, able to be within each other's company even in the afterlife.
This does not necessarily mean that these two Pokémon must be monogamous, as adultery isn't generally viewed as a frowned upon thing in Astrea as a whole. That entirely depends on the two directly involved.
Category:Game Mechanic