Commitment Ceremony
This is a ceremony that, to the living, is highly secretive. Guardians, after over a decade of tense and brutal training, undergo a seven day long ceremony. Guardians describe it as grueling, agonizing, and there are few that die in the process. In this process, they are soul-bonded to a demon and their lifespan dramatically increases - they can live centuries. This is how they earn their iconic pale blue skin, Marking, and crimson eyes.