Lumine/Aether, also known as the Princess/Prince, is one of the three main antagonists in the 2020 action role-playing fantasy video game Genshin Impact alongside the Sustainer of Heavenly Principles and the Tsaritsa of Snezhnaya.
The Traveler's twin journeyed across the stars with their sibling the Traveler until they witnessed the destruction of the nation Khaenri'ah at the hands of the Gods of Teyvat. Horrified by what they witnessed, the siblings tried to flee Teyvat but were defeated and separated by an Unknown God.
The Traveler's sibling eventually joined and became the leader of the Abyss Order, a faction of monsters comprised of the former denizens of Khaenri'ah who sought to wipe out humanity on Teyvat and wage war on the Gods. Five hundreds years later, the Traveler emerged on Teyvat and began searching for their long lost sibling.
- Lumine is voiced by Yan Ning in Chinese, by Sarah Miller-Crews in English and by Aoi Yūki in Japanese. Yūki has also voiced Tanya von Degurechaff in The Saga of Tanya the Evil, Clementine in Overlord, and Kurona Yasuhisa in Tokyo Ghoul.
- Aether is voiced by Lu Yin in Chinese, by Zach Aguilar in English and by Shun Horie in Japanese.
Lumine and Aether were twin adventurers who journeyed across the stars and visited myriad worlds together before reaching the world of Teyvat. The siblings personally witnessed the horrific destruction of the nation Khaenri'ah at the hands of the Seven Archons that ruled over the lands of Teyvat. Disturbed by the cataclysm, the twins tried to leave Teyvat only to have their path barred by an Unknown God who called herself the "Sustainer of Heavenly Principles."
Lumine and Aether attempted to defeat the Unknown God, but the Sustainer effortlessly subdued and separated the siblings. Through unknown means, one of the siblings later travelled across Teyvat and discovered the hidden truth of the world. That sibling developed a deep hatred for the Gods of Teyvat and the nations that revered them. They joined the Abyss Order, an enigmatic group of monsters spawned from the ruins of Khaenri'ah that had similar feelings, and eventually became the group's mysterious leader.
Five hundred years after the destruction of Khaenri'ah, the other sibling emerged on Teyvat and began searching for their long lost sibling. This sibling, known as the Traveler, suffered from amnesia and did not know what had become of their twin after their separation.
- The gender and name of the Traveler's sibling are both decided by the player at the start of the game. If the player chooses to play as Aether, then Lumine becomes the Princess. If instead Lumine is chosen, then Aether becomes the Prince.
- Although the identity of the Traveler's sibling is decided by the player at the beginning of the game, most promotional material presents Aether as the Traveler and Lumine as the long lost sibling.
A Post-Honkai Odyssey