Aether, "the Traveler", fell from space with his twin, Lumine 500 years ago. They were split by an Unknown God, and upon their reunion, Lumine had become the ruler of the Abyss. Aether wants to redeem her, so he travels the seven nations to find her. He also hopes to stop the plans of the Fatui and Abyss Order. He is a quiet and shy person, but still genuine and earnest. He happens to charge into danger recklessly for others and help. He can act a bit boyish and flustered sometimes.