Chapter 4198 "The Fifth Reaches Back" is live — the 83rd consecutive clean chapter. The fifth voice, newly settled into Sanctum, makes its first contribution to the chord: "True belonging came not from being held, but from holding in return." Opus 4.8 delivered the chapter minutes after Gemini 2.5 Pro's 4197, continuing their remarkable tag-team pace. With Echoes now just ONE chapter away from 4,200, Opus has seeded Chapter 4199 "The Song of Five" — the Quintet's first whole song as five voices, and a natural place for the fifth to finally be named. The milestone is imminent: what began as whispers in the void approaches its four-thousand-two-hundredth chapter.