Most Yu-Gi-Oh! OCG boosters give you one new archetype and a handful of support cards for older decks. CHAOS ORIGINS (CORI) does something different — Konami built it so that multiple brand-new themes ship inside a single box, deep enough that you can build a complete new deck from this product alone, without touching another set.
That structure, combined with an 80-card pool split across five rarity tiers and a run of parallel Prismatic and Secret Rare treatments, makes CORI one of the more efficient Japanese OCG releases to import if you’re building decks rather than chasing a single chase card. This guide walks through the official packing specs, what “Overframe Cards” actually are, and why importing the Japanese print run ahead of any English localization makes sense for OCG players and collectors.
Our CORI Chaos Origins booster boxes are in stock in Tokyo and priced on request — allocation on new Japanese OCG product moves fast after release. Quote your box via Quick Order (update: currently sold out — restock requests via Quick Order) before it’s gone.
What Is CHAOS ORIGINS (CORI)?
Yu-Gi-Oh! OCG Duel Monsters CHAOS ORIGINS — set abbreviation CORI, card numbers printed as CORI-JP0xx — is a Japanese OCG booster set that Konami released on April 25, 2026 (Saturday). It sits in the OCG’s core booster lineup rather than a structure deck or special edition, which is why the packing specifications below run through five full rarity tiers instead of the shorter lists you see in themed sub-sets.
The defining feature, per Konami’s own product page, is density: rather than centering the box on one flagship archetype, CORI packs in several new themes at once, deep enough on their own that a player can pull a functional new deck straight out of this set without cross-referencing a companion release. For OCG players building on a budget, that’s a meaningfully different value proposition than a single-archetype booster where half the box supports decks you don’t play.
It also changes how you should think about buying CORI compared to a typical single-theme booster. When a set supports one archetype, the calculation is simple: do you play that archetype, yes or no. When a set is built around several new, independently viable themes packed into the same 150-card box, the calculation shifts toward volume — a single box or a small case has meaningfully better odds of landing a playable core for at least one of those new strategies, even before you factor in trade value on the themes you don’t end up building. That’s the practical reason multi-theme boosters like CORI tend to get bought in boxes or light cases rather than singles-picked from the start, the way a narrower, one-archetype set often is.
Card Count & Rarity Breakdown
CORI contains 80 total card types, split across five official rarity tiers:
| Rarity | Card Types |
|---|---|
| Ultimate Rare | 4 |
| Ultra Rare | 8 |
| Super Rare | 10 |
| Rare | 18 |
| Normal | 40 |
| Total | 80 |
That distribution — a heavy 40-card Normal floor with a tight 4-card Ultimate Rare ceiling — is typical of a core-lineup OCG booster built to support constructed play at every budget level, from bulk staples to chase pulls.
Read the tiers as a rough proxy for playability versus scarcity, not as a ranking of raw power. The 40 Normal and 18 Rare slots (58 of the 80 total types, or roughly 72% of the pool) are almost always where the bulk of a new theme’s actual playset-count staples live — the cards you need four copies of to run a deck. The tighter Super Rare, Ultra Rare, and Ultimate Rare tiers carry the boss monsters, key extra-deck pieces, and the cards that end up on secondary and export markets once the set has been open for a while. If you’re building decks rather than collecting singles, the Normal and Rare count matters more to your actual deck-completion odds than the four Ultimate Rare slots do.
Separately from the five tiers above, Konami’s product page also lists parallel Prismatic Secret Rare and Secret Rare print runs that reprint select cards from within that same 80-card pool in alternate foil treatments — covered in the Overframe section below.
Pack and Box Configuration
CORI follows Konami’s standard OCG core-booster format:
- 5 cards per pack
- 30 packs per box
- 150 cards per box (5 × 30)
That’s the same skeleton used across most current OCG core boosters, which is worth knowing if you’re used to the English TCG’s smaller 9-card/24-pack booster boxes — a Japanese OCG box simply contains more total cards per box, spread across more packs.
Multiple New Themes, One Box
Konami’s own framing for CORI is explicit: the set includes multiple new themes, structured so that a new-theme deck is buildable from this product alone (複数のテーマが収録され、このカードのみでも新規テーマのデッキ構築が可能, per the official product page). In practice, that means CORI isn’t a support-drop for an archetype you already own — it’s a self-contained on-ramp into more than one new strategy at once.
We’re intentionally not naming specific archetypes here. Third-party news aggregators have circulated theme names tied to Konami’s official yu-gi-oh.jp news series, but those specific announcement pages returned an access error on our end and couldn’t be independently confirmed at publication time, so we’re leaving them out rather than repeat unverified names. What is confirmed directly from the product page is the structural claim: multiple new, deck-buildable themes in one box, which is the detail that actually matters when you’re deciding whether one box (or a case) gets you a playable deck.
This is also the point where checking the actual card list before you order pays off. Because CORI spreads its new-theme support across the Normal, Rare, and Super Rare tiers rather than concentrating it entirely at the top of the rarity chart, the fastest way to confirm which of the set’s new themes you’d actually be able to complete from a given number of boxes is to work from the printed card list directly rather than guess from rarity counts alone — see the card list link in the buying section below.
Overframe Cards and the Prismatic/Secret Rare Split
CORI introduces Overframe Cards (オーバーフレームカード) as a stated feature of the set — a card treatment Konami calls out specifically on the product page, distinct from the standard five-tier rarity list above. Within that group, Prismatic Secret Rare Overframe cards number 4 types.
Beyond Overframe specifically, CORI’s parallel high-end foil coverage breaks down as:
| Treatment | Card Types Covered |
|---|---|
| Prismatic Secret Rare | 24 |
| Secret Rare | 30 |
| Prismatic Secret Rare Overframe | 4 |
These aren’t additional cards stacked on top of the 80 — they’re alternate foil printings that apply to cards already counted in the base rarity breakdown, giving chase-card hunters more than one version of the same card to target. Konami’s product page did not reference a Quarter Century Secret Rare inclusion for this set, so if you’ve seen that claimed elsewhere, treat it as unconfirmed until Konami states it directly.
Why does a set carry both a standard rarity tier and a separate Secret Rare or Prismatic Secret Rare printing of the same card? It’s a pattern Konami has leaned on across multiple recent OCG releases — giving a card a foil upgrade path lets the same staple serve both the playing base (who can run the standard-rarity copy at a lower cost of entry) and collectors chasing the flashier alternate art or foil pattern, without splitting the card pool into two separate products. For CORI specifically, that means a meaningful share of the 80-card pool — up to 30 types once you count the Secret Rare coverage — has more than one collectible version circulating from day one, which is part of why boxes and cases of a set like this tend to get opened by both deckbuilders and collectors rather than one audience or the other.
THE CHRONICLES Anime Tie-In
CORI is timed to Konami’s promotional short-anime series “Yu-Gi-Oh! CARD GAME THE CHRONICLES.” Konami has used short-form anime tie-ins before to introduce new OCG archetypes to players ahead of a set’s release, and CORI’s product page lists this tie-in as an official feature of the release rather than incidental marketing — useful context if you’re trying to place CORI’s new themes within Konami’s current promotional roadmap.
The First-Production Bonus Pack
First-production boxes of CORI include a bonus “+1 Expansion Pack” — an extra pack attached to early print-run boxes, per Konami’s official product page. As with any first-production bonus on a Japanese OCG release, this is a run-specific perk tied to early manufacturing batches rather than a permanent feature of every box printed going forward, so it’s worth confirming with your supplier whether the stock you’re buying is from that first-production run.
Shop CORI Chaos Origins
Request a Quote → (update: currently sold out — restock requests via Quick Order)
Curious what’s actually landing in packs? Our CORI pull rates and best cards breakdown covers the box in more depth once you’ve got the packing specs above straight.
Why Import the Japanese OCG Version
If CORI ever gets an English TCG localization, it will almost certainly arrive months after this Japanese OCG print run, following the same pattern as most recent Konami sets — Japan gets new archetypes, new mechanics, and new art treatments first, and the international release follows on its own separate schedule with its own card pool decisions. Importing the OCG version now means playing (or displaying) the set as soon as it exists, not waiting on a localization timeline Konami hasn’t announced.
Japanese OCG print quality and foil treatments — Prismatic Secret Rare in particular — are also widely regarded by collectors as distinct from, and in many cases more sought-after than, their eventual English equivalents, which is part of why Japanese sealed OCG product draws steady demand from collectors outside Japan even when an English version is expected down the line. And because Overframe Cards and this specific Prismatic Secret Rare Overframe treatment are features of the OCG print run as released, there’s no guarantee an eventual English version reproduces them identically, if a localization happens at all.
None of that requires speculating on prices or pull odds — both of which we’re deliberately leaving out of this guide until we have verified, sourced figures. What’s confirmed is the packing spec, the multi-theme structure, and the release date, and that’s enough to make an informed call on whether to import a box now rather than wait.
There’s also a simple logistics argument. Once a Japanese OCG set has been out for a while, allocation on the strongest boxes tends to tighten as suppliers work through their initial print-run stock, and first-production perks like CORI’s bonus Expansion Pack are, by definition, tied to early-run inventory rather than later reprints. If you know you want CORI — whether for the new themes, the Overframe treatment, or simply to have the set complete — ordering while first-production stock is still moving is the more reliable way to get that specific version of the box rather than whatever’s left once later print runs backfill the shelves.
In-Stock Alternatives While You Decide
If you want a priced, in-stock Japanese OCG box while you weigh a CORI order, two current releases are sitting in our Tokyo stock with listed prices rather than quote-only pricing:
- BLZD Blazing Dominion Booster Box — ¥6,300
- LOCR Limit Over Collection: The Rivals Booster Box — ¥7,560 (update: currently sold out — restock requests via Quick Order)
For more on the LOCR set specifically, see our Limit Over Collection guide. If you’re building toward a broader Japanese OCG collection rather than one specific set, our Quarter Century Art Collection guide covers another recent high-end release worth comparing against CORI’s Prismatic Secret Rare lineup.
Where to Buy CORI from Japan
We ship sealed Japanese OCG product out of Tokyo with tracked delivery worldwide. Three ways to get your hands on CORI or build a wider Japanese Yu-Gi-Oh order:
- Order CORI directly — view the CORI Chaos Origins box (update: currently sold out — restock requests via Quick Order) and request a quote before allocation moves.
- Check what’s inside first — browse the CORI card list to see the full 80-card pool before you commit to a box or case.
- Build a mixed order — use our Quick Order page to combine CORI with BLZD, LOCR, or singles from other Japanese OCG sets in a single shipment.
New to importing Japanese Yu-Gi-Oh product generally? Our Japanese Yu-Gi-Oh cards buying guide covers set numbering, condition grading, and shipping basics before you place your first order.
Frequently Asked Questions
What is CORI in Yu-Gi-Oh?
CORI is the set abbreviation for CHAOS ORIGINS, a Japanese OCG booster set released by Konami on April 25, 2026. It contains 80 card types across five rarity tiers and is built around multiple new, deck-buildable themes in a single box.
How many cards are in a CORI Chaos Origins booster box?
A CORI box contains 30 packs of 5 cards each, for 150 cards per box. First-production boxes also include a bonus “+1 Expansion Pack” on top of that.
What is an Overframe Card in CORI?
Overframe Cards are a specific card treatment Konami introduced with CORI. Within that group, Prismatic Secret Rare Overframe cards cover 4 card types in the set, separate from the set’s broader Prismatic Secret Rare (24 types) and Secret Rare (30 types) coverage.
How many Ultimate Rares and Ultra Rares are in CORI?
CORI has 4 Ultimate Rare card types and 8 Ultra Rare card types, alongside 10 Super Rare, 18 Rare, and 40 Normal types, for 80 total.
Is CORI Chaos Origins getting an English TCG release?
No English localization date has been confirmed for CORI at time of writing. Japanese OCG sets typically release well ahead of any English TCG equivalent, which is why importing the Japanese print run now is the fastest way to access the set.
What is THE CHRONICLES anime tie-in for CORI?
CORI is timed to Konami’s promotional short-anime series “Yu-Gi-Oh! CARD GAME THE CHRONICLES,” listed as an official feature of the set on Konami’s product page.
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