About

🐙 GitHub Browse the full source, submit corrections via Issues, or fork the Codex. MIT licensed — everything is open. github.com/ShimotsukiKajiya 📡 RSS Feed Subscribe to get notified when new data, pages, or features ship. Add the feed to any reader. feed.xml · standard RSS 📥 Corrections Inbox Live feed of reader-submitted corrections, theory suggestions, and SBS fixes flowing in from GitHub Issues. Public · transparent curation
🧠 Start with a Character Every character cross-linked to their crew, devil fruit, weapons, family, birthplace, and voice actors — with a trust badge on every fact. Try Luffy → character.html 📜 Browse the SBS Vault Every "Question Corner" answer Oda has ever published, fully searchable and cross-linked to the characters mentioned. 1,685 Q&As · 107 volumes 🔥 Check a Fan Theory Top r/OnePiece theories weighed against actual canon — each verdict cites Oda's own SBS quotes when relevant. 94 theories · verdicts cited

What this is

The Shimotsuki Codex is a free fan reference for One Piece — not a wiki. The Fandom wiki is a useful starting point, but it carries speculation creep, edit wars, and circular citations. The Codex is the verification layer: every claim traced to a primary source, every fact stamped with a trust tier so you always know what you're reading.

28+ years of canon across 1,181 chapters and nearly three decades of SBS, cross-referenced in one place. Characters link to crews, fruits, weapons, family trees, birthplaces, and voice actors. Each fact points back to the chapter or SBS volume that establishes it.

Status legend: Live stable · Maturing works but rough edges · Planned on the roadmap

Built by Shimotsuki Kajiya, with Claude as pair programmer. Forging clarity from chaos.

The Canon Engine — trust tiers

Five tiers, each with its own visual treatment so the trust level is readable at a glance:

In SBS Q&As and theory bodies, recognised references auto-link with a colour that tells you who said the surrounding sentence: Oda's words get gold, a reader's question stays neutral grey, and a theorist's claim reads as ink-blue speculation. A link is navigation — not endorsement of the surrounding sentence. See canon-policy.md and canon-engine-roadmap.md for the rules in detail.

Spoiler Shield

Set your reading cutoff (chapter or episode) in Settings — every data-driven panel across the site filters its content to that point. Character lists, devil fruit users, theory verdicts, family trees, debut chapters, voice-actor assignments: all tier-aware and respect your cutoff.

Where it's strongest: data pages (characters, fruits, crews, theories, atlas, heatmap) — the shield filters by chapter at the data layer, so future-arc names never appear. Where it's lighter: curated lore essays (Void Century, Will of D., Haki, etc.) have prose paragraphs that discuss revelations by chapter range; the related-character lists at the bottom of each essay do respect your cutoff, but the body text itself may name late-arc revelations. If you're avoiding mid-Wano-and-later spoilers, lean on the data pages and skip the essays until you're caught up.

Search and listings: character lists and search respect your reading cutoff once you've set one. If you haven't set a cutoff yet, results aren't filtered — so a cold search for a late-arc character can spoil. Set yours in Settings to switch filtering on. Tightening this for un-onboarded visitors is a known item on the post-launch list.

Coverage notes

The Codex covers everything that exists — but a few notable gaps in the source material itself:

How it works

Every page is a static HTML file with all data baked in. Hosted free on GitHub Pages. No backend, no database, no tracking, no signup.

Credits & data sources

One Piece
Created by Eiichiro Oda, published by Shueisha. All canon belongs to him.
SBS Translations
Scraped from the One Piece Fandom wiki, which sources many translations from Library of Ohara by Artur. Go support him.
Theory Source
Top-voted threads on r/OnePiece — pulled with quality gates (300+ upvotes, real reasoning).
Canon Research
Grand Line Review by Liam — deep canon analysis videos referenced when curating the Will of D., Void Century, Joy Boy, and the Ancient Kingdom pages.
World Map
For the canonical, interactive One Piece world map, see Artur's Interactive One Piece World Map (Library of Ohara, May 2026) — five years of careful research from Oda's own sketches. The Codex's world-map.html is a simplified at-a-glance schematic and points readers to Artur's work for the deep dive.
Cover Art & Images
Tankoubon covers and SBS images from the Fandom wiki. Used for educational/identification purposes under fair use.
AI Analysis
Powered by Claude (Haiku 4.5) for SBS categorisation and theory verdicts.
Built by
Shimotsuki Kajiya · 2026 · with Claude as pair programmer
Source code
github.com/ShimotsukiKajiya/one-piece-chapter-map — MIT licence
Contact
shimotsukicodex@proton.me — for things that don't fit a GitHub issue

How to contribute

Found an error? Want to suggest a theory? Spotted a missing SBS Q&A? All contributions go through GitHub Issues — just pick a template:

📜 Report an SBS error or missing entry
Wrong text, wrong volume, missing Q&A, miscategorised — all welcome.
Open SBS correction →
💭 Suggest a new theory
Got a theory that should be tracked and verified? Submit it here.
Suggest a theory →
🐛 Report a bug or request a feature
Use the standard GitHub issue form.
Open issue →

No GitHub account? Reach out via the social links at the bottom of this page — Bluesky, X, or Reddit DMs all work. We'll add your contribution to the queue manually.

Help shape what's next

The Codex is a community-driven reference, not a finished product. The Maturing and Planned entries above are where input matters most — what would make them sharper, what's missing, what would you actually use? Tell us what to build next, what existing surfaces feel rough, or what conventions need rethinking.

💡 Suggest a feature or improvement
Anything from a small UX tweak to a whole new surface.
Suggest a feature →
🎯 Tell us what's rough
Found a Maturing surface that feels half-baked? Specifics help us prioritise — which page, what about it, what'd be better.
Send UX feedback →

Privacy

No accounts. No tracking. No cookies set by this site. No analytics. Your settings, favourites, and search history are stored in your own browser's localStorage and never leave your device.

This site loads images from the One Piece Fandom wiki and reader avatars from this repo. That's the only passive network activity besides loading the page itself.

Submission forms. The Curate, Corrections, and Theory Workbench pages submit to GitHub Issues via the public GitHub API. If you choose to submit a correction or theory, your submission becomes a public issue on the project repo, attached to your GitHub identity if you are signed in. If you would rather stay anonymous, do not use these forms — read-only browsing collects nothing.

Legal

One Piece, all character names, story content, and artwork are copyright © Eiichiro Oda / Shueisha. This is a non-commercial fan project intended for education, archive, and discussion. No revenue is generated from this site, and there are no ads, donations, sponsors, or paid tiers.

Site code is licensed under MIT (see LICENSE). Curated reference data describes facts about the One Piece work; the underlying story, characters, and artwork remain copyright Eiichiro Oda / Shueisha. Images sourced from the One Piece Fandom wiki remain the property of their respective rights holders; Fandom community contributions are licensed CC BY-SA where applicable.

Takedown / Content Removal

If you are a representative of Shueisha, Toei Animation, or another rights holder and would like specific content removed, please open a GitHub issue on the project repository:

github.com/ShimotsukiKajiya/one-piece-chapter-map/issues/new →

To help us act quickly, please include:

We will respond and act in good faith within a reasonable timeframe. The maintainer monitors the repository directly; this is the fastest contact path.