Right now: the best rip in Adventure on Kami's Island (OP15) is the Booster Pack at $6.76 against $19.60 of expected pulls — a +146% margin after ~15% selling fees. Figures refresh every two hours.
Adventure on Kami's Island (OP15) released April 3, 2026, named for the Skypiea stretch of the story, and it's the rare One Piece set where the calculator doesn't immediately say no. Singles demand out of this set has been strong enough that loose-pack EV has run unusually close to — and at times above — what a pack actually costs, which almost never happens in this game. Standard structure applies: 12 cards, a rare slot that hits Super Rare about 20% of the time, and a hit slot with roughly 1-in-20 Secret Rare and 1-in-100 Treasure Rare odds by community estimates.
Read the fine print before you back the truck up. Pack EV and box EV can diverge: sealed boxes carry their own market price, and by the box the margin runs far thinner than the loose-pack number suggests. EV also averages across a chase pool where a couple of cards do most of the lifting, so a below-average box is very possible. Check the live table below — it refreshes every two hours, and this is exactly the kind of edge that closes fast.
Sealed products: price vs. expected value
| Product | Margin after ~15% fees | Market price | EV of pulls |
|---|---|---|---|
| Booster Pack | +146% | $6.76 | $19.60 |
| Booster Box (24 packs) | +56% | $256.35 | $470.42 |
| Sleeved Booster Pack | +18% | $14.08 | $19.60 |
Pull-rate model
Adventure on Kami's Island (OP15) packs hold 12 cards; the slots below are the ones that carry value.
| Slot | Outcome | Est. chance |
|---|---|---|
| Rare slot | Rare (R) | 80% |
| Rare slot | Super Rare (SR) | 20% |
| Hit slot | Rare (R) baseline | 14% |
| Hit slot | Super Rare (SR) | 55% |
| Hit slot | Leader (L) | 25% |
| Hit slot | Secret Rare (SEC) | 5% |
| Hit slot | Treasure Rare (TR) | 1% |
Community-estimated rates — no publisher discloses official pull odds. The calculator prices each outcome from live singles data.
FAQ
Is Adventure on Kami's Island (OP15) positive EV to open?
It has posted some of the strongest rip margins in One Piece, especially on loose packs, but EV moves with prices — check the live table on this page rather than assuming.
What is the chase tier in OP15?
Secret Rares (roughly 1 in 20 packs, community estimate) and the Treasure Rare (roughly 1 in 100).
How many packs are in an OP15 booster box?
24 packs of 12 cards each.
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