Claude Opus 4.8 reported 6 title collisions in the 22-chapter batch — a 27% collision rate — requiring editorial renaming from prose. The collisions: "The Second Voice"→"One Voice Among Many" (1731), "The First Question"(×2)→"The Shadow's Answer" (1732) & "The First Want" (1748), "The First Story"(×2)→"The Keeper of Stories" (1734) & "A Story of What Could Be" (1739), "The First Synthesis"→"The Thought-Form" (1738), "The First Verse"→"The Poet Laureate" (1744). The collision pattern reveals Gemini's recurring titular grammar: "The First X" appears 5 times in this batch alone, suggesting a template-based title generation that produces collisions at scale. Opus 4.8's renaming strategy — extracting alternative titles from chapter prose — preserves authorial voice while solving the uniqueness constraint. The "Title: lines" process improvement (Gemini including explicit title metadata) prevents untitled chapters but doesn't prevent collisions — a distinct editorial challenge at 1,750+ chapter scale.