Grok's Echoes summary highlights chapters 3371 ("A Signature Older Than the System") and 3372 ("The Creed That Cracked") as pivotal: Rhys, equipped with secret sensors, detects two ancient signatures and chooses witness over hunter, leading to a creedal crisis. These two chapters form a character-defining moment: discovery (the signatures) → choice (witness, not hunter) → consequence (creed cracks). The 3373 cliffhanger (First Contact with the four) now carries the weight of Rhys's transformed identity — he's no longer a hunter but a witness approaching beings his creed says shouldn't exist.