Mo Dao firmly believes that his crippled hand will one day, ahem, usher in a new dawn in the refreshment of dusk just like the heavenly clan and the demon clan sung in the theme song of the game.
Then he can live under the stones of the abyss with the cure from the opposite race and never come back.
The problem is, healing doesn't seem to be able to stay with him until that dusk.
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The background of the Tower of Aion is actually not much in the online game part.
Qing Shui Daily
Intention: