The Thirteenth Sign

Dark Romantasy · Explicit / high heat · 30 chapters + epilogue · 100K novel · Dual 1st person

Complete planning package, 122 pages: the premise, a full codex, every chapter outlined, an AI prompt for every chapter, and the whole launch kit — listing, blurb, keywords, posts, newsletter, reader magnet — already written. One buyer only. When it’s claimed, it’s gone.

Isaura Venn has spent twenty-six years being unremarkable on purpose. She dresses one degree below her station, counts the exits of every room before she sits down, and has never married — because marriage requires a second reading, and a second reading would kill her before the paperwork was filed.

Then a thirteenth constellation returns to a sky it left eight hundred years ago, every reading in the empire begins to fail, and the man whose signature appears on four hundred and eleven drowning orders works out what she is in under a week.

Before she can survive the eleven weeks until her own re-reading, there's an imperial writ she has no legal grounds to refuse, a compatibility reading he falsifies with his own hand in front of two witnesses, an underheated house with two chairs in it where he asks her sincerely how a person is supposed to manage wanting something for the first time at thirty-six, and the list she has kept since she was eleven of everyone who ever looked at her too long — which he finds, and reads, and recites back to her, and will not apologise for.

She was told at seven what she was, once, in a flat voice, and has believed ever since that she is a hole in the world rather than a person. He has spent eighteen years deciding who counts, and found the deciding restful. Neither of them survives being known by the other.

Dark court romantasy where the magic is a filing system and the atrocity is administrative. The kind of book where the grand gesture is a man reading four hundred and eleven names aloud, in order, for two hours, with no defence offered.

WHAT’S INSIDE THIS PACKAGE

⭐️ Story Premise — high-concept pitch, elevator pitch, and Market-Matched™ validation with triple-category positioning, competitive analysis, and ninety-day success metrics

⭐️ Complete Codex — full story bible with main characters, supporting cast of 6, the imperial observatory and Tribunal Hall settings, a twelve-house celestial magic system with hard rules and one suppressed thirteenth, a 19-week chapter-by-chapter timeline, dual first-person voice system with distinct verbal patterns for Isaura (constructed, ornamented, shortens under stress) and Rell (technical, exact, lengthens under stress), relationship progression, explicit intimacy guidance, and series seeds for 3 future books

⭐️ Chapter-by-Chapter Outline — 30 chapters + epilogue with emotional beats, word count targets, scene breakdowns, and a nineteen-week countdown structure

⭐️ AI-Ready Chapter Prompts — detailed writing instructions for all 31 chapters with tone, pacing, heat-level progression, and distinct voice guidance for alternating POV

⭐️ Amazon Launch Kit — the listing, written: Amazon listing with categories and keywords and back cover copy

⭐️ Reader & Promo Kit — Instagram, Facebook and TikTok posts, newsletter announcement with subject lines, ARC pitch, content notes, and a complete cover-art prompt

⭐️ Market-Matched™ Brief — launch-ready market strategy with category snapshot, keyword targeting rationale for all seven KDP fields, pricing strategy, cover direction, and series read-through plan

You write the book. The listing, the blurb, the keywords, the posts, the newsletter and the reader magnet are already written.

One buyer. One story. Exclusively yours.

WHY THIS WILL SELL

→ Romance > Dark Romance sits at 19.7 sales-to-comp (Hot Niche) with only 7,169 competing titles — the single best ratio in the entire market

→ Zodiac scores a perfect 100 against competition on just 0.7% of books — and unlike most empty lanes, demand is already proven at bestseller level

→ Dual-stacks with SF & Fantasy > Fantasy > Romantic (18.2 sales-to-comp, Hot Mainstream) — the two strongest cells available, held simultaneously

→ Adult zodiac romantasy effectively does not exist — the framework's proven readership is currently served only by school stories

→ Court intrigue generates an estimated $3,034K monthly across 15% of titles — proven at volume, unserved in this frame

→ A hero who is never exonerated is built to be argued about — polarised dark romance reviews drive shares and shelf visibility

TROPES:
• Forced Betrothal
• Obsession
• Morally Grey Hero (Actually Guilty)
• He Falls First
• Age Gap
• Hidden Identity
• Court Intrigue
• Captive Bride
• Older Man in Authority
• Zero Third-Act Miscommunication
• He Read Her Diary and Won't Apologise
• The Empty Bracket on the Instrument Floor
• Two Hundred and Six Ways to Say Nothing
• The Grand Gesture Is a List

HEAT LEVEL: Open Door / High Spice

Perfect for fans of: Caroline Peckham, Raven Kennedy, Scarlett St. Clair, and Lindsay Straube

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