hololive OFFICIAL CARD GAME Booster Pack Curious Universe: A thorough explanation of the featured rare cards and why they're so popular!
- Apr 9
- 3 min read

The latest booster pack for the official hololive card game, "hololive OFFICIAL CARD GAME," "Curious Universe," is set to be released on June 20, 2025, and is generating a lot of buzz among fans. This article will provide a thorough explanation of Curious Universe's rare cards, the reasons for its popularity, and its resale and collection value.
Features and contents of Curious Universe
Curious Universe is the fourth booster pack featuring many popular Hololive VTubers. In addition to Oozora Subaru and Yukihana Lamy, new characters such as Hakui Koyori from the secret society holoX and Laplace Darkness are also joining the fray.
Examples of featured talents : Oozora Subaru, Yukihana Lamy, Laplace Darkness, Hakui Koyori, Ichijo Ririka, Jūfūtei Raden, Anya Melfisa, etc.
Examples of Hololive member cards : Shirakami Fubuki, Natsuiro Matsuri, Murasaki Shion, Ookami Mio, Houshou Marine, Momosuzu Nene, etc.
Types of rare cards and their inclusion rates
Curious Universe includes cards of various rarities.
Rarity | Number of types | Inclusion rate and features |
OSR | 7 types | Rare cards of your favorite Hololive member: 0-1 per box |
RR | 12 types | Regular rare, 4 per box |
R | 18 types | rare |
U | 35 types | Uncommon |
C | 36 types | common |
SEC | 4 types | Secret Rare: 1 in 96 boxes (approximately 0.2%) |
OUR | 7 types | My favorite Hololive member's ultra-rare card is one in 48 boxes (approximately 0.3%). |
UR | 12 types | Ultra Rare: 1 in 12 boxes (approximately 0.7%) |
SY | 6 types | Special Ale: 1 in 3 boxes (approximately 6.6%) |
SR | 31 types | Super Rare: 1-2 cards per box (approximately 3.3%) |
S | 57 types | Standard, 2 cards per box (approximately 3.7%) |
SEC (Secret) and OUR (Oshi Hololive Ultra Rare) cards, in particular, are extremely rare and attract a lot of attention from fans who are aiming to complete their collections.
Popular and highly sought-after rare cards from Curious Universe
Curious Universe features many cards of newly participating characters and popular talents, but the following cards in particular are attracting attention.
Oozora Subaru (Favorite Hololive Member Card)
Yukihana Lamy (My favorite Hololive member card)
Laplace Darkness (Favorite Hololive Member Card)
Koyori Hakui (Favorite Hololive Member Card)
In addition, popular characters from previous sets are scheduled to appear as new cards. Ultra-rare cards such as SEC and OUR tend to fetch high market prices and are popular among collectors and investors.
Rare card prices and buyback trends
While the exact prices for rare cards in Curious Universe haven't been announced yet, in past booster packs, SEC cards have been traded for tens of thousands to hundreds of thousands of yen, and OUR cards for tens of thousands of yen as well.
SEC cards : Extremely rare, so they tend to fetch high prices immediately after release.
OUR Card : Highly sought after by fans because it is exclusive to their favorite Hololive member.
UR/SR cards : They have a low inclusion rate and are popular for collecting and deck building.
The fun of collecting and battling in the Curious Universe
Curious Universe is characterized by its high level of both collectibility and gameplay. The card designs and finishes are of very high quality, and it is highly regarded by collectors.
Collectibility : The rarity of rare cards and the beauty of the illustrations.
Gameplay : New characters and ability cards broaden the range of strategies.
The peace of mind of an unopened box : The shrink wrap ensures it's in brand-new condition.
How to buy Curious Universe and recommended online stores
Curious Universe can be purchased at the following locations:
Bushiroad Online Store
Mass retailers, department stores, toy specialty stores
Convenience stores (some stores)
Card shops (physical stores and online)
summary
The hololive OFFICIAL CARD GAME Booster Pack Curious Universe is a highly anticipated product featuring numerous rare cards of the latest characters and popular talents, making it enjoyable for both collecting and battling. Ultra-rare cards such as SEC and OUR are particularly scarce, and their market value may skyrocket immediately after release. It's recommended for fans, collectors, and card game enthusiasts alike .
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