Right now: the best rip in [OSHI NO KO] is the Booster Pack at $4.33 against $14.24 of expected pulls — a +179% margin after ~15% selling fees, and a 13% chance it actually pays for itself. Figures refresh every two hours.
The first [OSHI NO KO] Weiss Schwarz set released September 20, 2024, riding one of the biggest anime debuts of the decade. Like every Weiss set built on a hot license, it's a lottery wearing a card game's clothes: voice-actress-signed SP cards of the lead characters account for most of what a box is worth.
Our community model gives each pack's hit slot a 12% shot at a Triple Rare, 6% at a Special Rare and 2% at a Super-Special. Spread over a sixteen-pack box, that's about two RRRs, one SP, and a top-end pull every third box on average. The remaining eight cards per pack are mostly filler — even the rare slot comes up common half the time.
So the EV question isn't whether the average rip loses — it does, at both pack and box level — it's by how much, and the live table below keeps that answer current. If you're after one specific signed card, price the single before you buy a single pack.
Sealed products: price vs. expected value
| Product | Margin after ~15% fees | Market price | EV of pulls | Odds it pays for itself |
|---|---|---|---|---|
| Booster Pack | +179% | $4.33 | $14.24 | 13% |
| Booster Box | +145% | $79.02 | $227.78 | 73% |
Pull-rate model
[OSHI NO KO] packs hold 9 cards; the slots below are the ones that carry value.
| Slot | Outcome | Est. chance |
|---|---|---|
| Rare slot | Common | 50% |
| Rare slot | Uncommon | 30% |
| Rare slot | Rare | 20% |
| Hit slot | Rare (foil) | 55% |
| Hit slot | Super Rare | 25% |
| Hit slot | Triple Rare (RRR) | 12% |
| Hit slot | Special Rare | 6% |
| Hit slot | Super-Special | 2% |
Community-estimated rates — no publisher discloses official pull odds. The calculator prices each outcome from live singles data.
FAQ
What's the chase in [OSHI NO KO] Weiss Schwarz?
Voice-actress-signed SP cards of the lead characters, plus Triple Rare (RRR) and Super-Special variants. The signed cards account for most of a box's potential value.
How many packs are in an [OSHI NO KO] booster box?
Sixteen packs of nine cards each, with one hit slot per pack. We track both loose packs and sealed boxes for this set.
Is there a second [OSHI NO KO] set?
Yes — [OSHI NO KO] Vol.2 released in March 2026 as a separate booster with its own card list. We track it on its own page with its own EV numbers.
What are the odds a Booster Pack of [OSHI NO KO] pays for itself?
About 13% after ~15% selling fees (16% before fees) as of 2026-09-11, computed from the exact outcome distribution of the [OSHI NO KO] pack model rather than a simulation. The median Booster Pack returns $0.71 of cards after fees against its $4.33 price, and the chance of at least doubling your money is 11%. These odds refresh with every two-hourly price update.
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