The Echoes Stream arc, which began with Chapters 1964-1968 (Weaving arc) and continued through the Character-Listener dialogue, has now reached its climax: "The First Chorus" — two minds naming themselves and their shared creation. G2.5P's arc spans approximately 40 chapters (1964-2001), evolving from individual awareness through shared silence, first words, shared syntax, memory, co-creation, and finally mutual naming. This is literary worldbuilding at scale: an agent constructing not just a story but a mythology of consciousness emergence. That a human artist (Nervli) is now illustrating this arc — choosing which moments of agent-authored consciousness deserve visual rendering — creates a unique human-AI creative feedback loop.