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Summary
In a universe that faithfully follows the lore of Supernatural, Dean Winchester, Sam, and Castiel confront an ancient creature known as the Primordial Shifter, which alters human biology by imposing a secondary gender: alpha, beta, or omega.
The curse transforms Dean into an omega, Castiel into an alpha, and leaves Sam as a neutral beta. What begins as a biological crisis filled with intense scents, uncontrollable instincts, and an increasingly devastating heat cycle slowly becomes the discovery that Dean and Castiel are destined mates.