There is, in fact, a terrifying legend on Teyvat. When the holy spring runs dry, a grim warrior appears like lightning, and darkness buries the sun. Even if the warrior stands for justice, when a pure-hearted warrior unleashes their full power in battle to bury evil, their own body will be tainted by evil and unable to escape the eternal darkness. They will become the ultimate monster that destroys the world. People are deeply afraid of this legend.
But there is another legend about it: wherever darkness and destruction reign, a radiant light of salvation will appear. Even a grim warrior can turn the ultimate darkness into a shining light.
