A Japanese "Ancient Roar" booster box is a collectible item from the Scarlet & Violet era that contains 30 sealed packs, with each pack holding 5 cards for a total of 150 cards in the box. This specific Japanese set features cards from the Paldea region, including prominent Pokémon like Roaring Moon ex, Iron Valiant, Slither Wing, Scream Tail, and other Paradox Pokémon. 
Contents: 30 booster packs, 5 cards per pack, for a total of 150 cards.
Set: Part of the Japanese Scarlet & Violet series, specifically the fourth set of this era, known as SV4K.
Notable Pokémon: Features popular Pokémon such as Roaring Moon ex (the set's namesake), Iron Valiant, Slither Wing, and Scream Tail.
Card Features: Includes standard-sized Japanese cards, often with a higher chance of a holographic card per pack compared to English versions.
Manufacturer: Produced by Nintendo and The Pokémon Company in 2023.
Target Audience: A valuable addition for collectors and players who want to expand their Pokémon card collection with cards from this specific set.