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Weiss Schwarz Oshi no Ko Vol. 1 Booster Box - Japanese
Protect your purchase
Orders placed Monday to Friday (except public holidays) before 12:00 Spanish time ship the same day. Mainland Spain, Balearic Islands, Ceuta and Melilla: 1 - 3 business days. Canary Islands: 2 - 8 business days.
Before you buy
Is it original and factory sealed?
When will it arrive?
What language are the cards in?
Can I return it?
Another question? Chat with us (Monday to Friday, 9:00 to 18:00 Spanish time) or email info@metamorphcenter.com
⭐ Ai's "B-Komachi" SSP, with new artwork and Rie Takahashi's hot-stamped signature, is the card everyone chases in Oshi no Ko Vol.1 (OSK/S107). This is the set that brought 【推しの子】 to Weiss Schwarz on 8 December 2023, and it covers the first season of the anime: Ai and the original B-Komachi, the "Love Now" reality show and the group's comeback with Ruby, Kana and MEMcho.
What's in the Weiss Schwarz Oshi no Ko Vol.1 Japanese booster box?
Official Bushiroad product, factory sealed:
- 16 packs per box, 9 cards per pack (144 cards in total)
- Set code OSK/S107: 100 regular cards and 100 parallels
- Regular cards: 10 RR, 22 R, 28 U, 28 C, 4 CR and 8 CC
- Chase cards:
- SSP (6 types) with artwork drawn for the set and foil-stamped signatures
- SP (6 types), also signed by the cast
- OFR (12 types), the frameless version
- SR (76 types)
- Signatures from the six main voice actors: Rie Takahashi (Ai), Takeo Otsuka (Aqua), Yurie Igoma (Ruby), Megumi Han (Kana), Rumi Okubo (MEMcho) and Manaka Iwami (Akane)
About the Oshi no Ko Vol.1 expansion (OSK/S107)
Bushiroad released it simply as "Booster Pack 【推しの子】", with no volume number. Collectors started calling it Vol.1 once Vol.2 (February 2025) and Vol.3 (August 2026) came out. It hit shelves before season two aired, so everything in it comes from season one.
The most valuable pulls are the SSPs of Ai, Kana, Ruby and Akane, plus Ai's SP. It's also the only Oshi no Ko booster set without an AGR (hand-signed autograph card): every signature here is hot-stamped.
How is it different from Vol.3?
- Bushiroad's older format: 16 packs of 9 cards, against 10 packs of 8 in Vol.3
- Season one only; Vol.3 came out in 2026, after season three had aired
- 12 frameless OFR cards, a rarity Vol.3 doesn't have
If you're after the latest set, we also stock the Weiss Schwarz Oshi no Ko Vol.3 Booster Box.
Why the Japanese edition?
- The original release, nine months ahead of the English one (September 2024)
- Playable with any card numbered OSK/, including Vol.2, Vol.3 and the Trial Deck
Shipping from Spain
Ships from Spain. 24 - 72 h within Spain, 3 - 8 business days to the rest of Europe. Official Japanese product, fully sealed and packed with reinforced protection.
Orders placed Monday to Friday before 12:00 (Spanish time) ship the same day.
Mainland Spain, Balearic Islands, Ceuta and Melilla: 24 - 72 h.
Canary Islands: 2 - 8 business days.
Portugal, rest of Europe and United Kingdom: 3 - 8 business days.
Once your order ships, you'll get an email with the tracking number.
Every order comes with a surprise, plus some stickers and a personalized card.

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FAQs
Questions?
Answers to the questions we get most about our products, shipping and policies.
If your question isn't here, get in touch and we'll help.
Metamorph Center is a premium retailer of authentic Pokémon cards. We sell sealed booster packs, booster boxes and more, with a focus on high-quality collectibles and excellent service.
Order directly on our website, https://metamorphcenter.com/en. Browse our collections, add items to your cart and pay securely.
No, Metamorph Center doesn't have a physical store for now. The only way to buy from us is on our website, metamorphcenter.com.
Yes. We import directly from official Japanese, Chinese, Korean and European distributors. Every box arrives factory sealed.
Orders placed Monday to Friday before 12:00 Spanish time ship the same day.
Delivery takes 24 - 72 h within mainland Spain, where shipping starts at €4.95, and 3 - 8 business days to the rest of Europe, with the exact cost shown at checkout.
Yes, we do.
You have 14 calendar days to return products in the same condition you received them.
We refund the full amount once we've received the complete order and checked that it hasn't been tampered with.
Every shipment includes a tracking number and delivery insurance.
We also pack everything very carefully so it all arrives in perfect condition.
If anything goes wrong, we'll send you another unit or refund 100%.
If your order couldn't be delivered because you weren't home, the fastest fix is to contact our carrier, Correos.
Whenever we have pre-orders open, we announce them so you can reserve yours.
We always state the day the order will ship, and you'll get a notification.





































