The Traveler’s sibling in Genshin Impact is taken away by an unknown god at the beginning of the game, leading to the separation of the siblings.
At the start of Genshin Impact, players choose to play as either the male or female character, Aether or Lumine, respectively. The sibling not chosen becomes the “lost” sibling. In the opening cinematic, the siblings are seen traveling together through various worlds until they encounter a mysterious and powerful god. This god, later known as the Sustainer of Heavenly Principles, confronts them as they attempt to leave the world of Teyvat.
During this confrontation, the god engages in a battle with the siblings, ultimately overpowering them. The god then uses her powers to create a cube-like structure that captures the Traveler’s sibling and whisks them away to an unknown location. The Traveler is rendered unconscious and awakens alone on the land of Teyvat, with no knowledge of their sibling’s whereabouts.
The separation of the siblings sets the stage for the Traveler’s quest throughout the game. The main storyline revolves around the Traveler’s search for their missing sibling, as they explore the vast world of Teyvat, meet new allies, and uncover the secrets of the gods and the history of the land. The Traveler’s journey involves dealing with the various factions and supernatural forces within Teyvat, all while hoping to find clues that will lead to a reunion with their lost sibling.