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On Callisto, a cyber-craftsman with nanotech in his blood survives on odd jobs and bad dreams. During a historic rocket launch, small inconsistencies begin to surface—names don’t match, memories feel edited, and the sky watches back. Gray Vein / Grey Vain is a slow-burn sci-fi epic about systems, identity, and truths buried in plain sight.

This series is rated Young Adult. Please review the Content Ratings page for more information.