In Genshin Impact lore, the Primordial One (also known as Phanes or the First Descender) is a progenitor god who arrived from another world and reshaped Teyvat. They are considered the original creator of the world and established the current order, including the Heavenly Principles and the Seven Archons. 

Here's a more detailed explanation:

• Arrival and Creation:

  The Primordial One is said to have come from outside Teyvat and battled the original dragon rulers (Sovereign Dragons) to establish their dominion. They then created the heavens and earth, separating the universe and the "microcosm of the world". 

• Shades and Authority:

  The Primordial One created four "Shades" (including Istaroth, the Shade of Time) and delegated authority to them and the Seven Archons. 

• Retirement and Legacy:

  After establishing a Golden Age for humanity, the Primordial One seemingly retired, leaving the governance of Teyvat to the Heavenly Principles and the Archons. 

• Connection to Celestia:

  The Primordial One is strongly linked to Celestia, the celestial realm, and their actions and motives are central to the game's overarching conflict. 

• Possible Identities:

  Some theories suggest the Primordial One might be represented by the Sustainer of Heavenly Principles, or that they may have a connection to the Traveler (Aether/Lumine). 

• The Second Who Came:

  The Primordial One's actions are often contrasted with those of the "Second Who Came," another powerful being from beyond Teyvat, whose goals and motivations are still largely unknown. 

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