Genshin Impact; Fallen Hero

In the twilight of the final battle, when Natlan's sky broke into flames and shadows, Aether and Mavuika faced the Abyss in its cruelest form. But victory did not come without its price. At the last moment, fate separated them-Mavuika was thrown back into the light, while Aether sank into endless darkness.
Now, lost in a world where time whispers forgotten secrets and the earth seems to dream, Aether walks among echoes of memories and illusions. "A Thousand Blazing Suns", once alive with Natlan's fire, lies dull and cold, how a simple decision like a sacrifice can change fate so abruptly