A Japanese Mega Brave Booster Box is a factory-sealed box of 30 packs from the "M1L" expansion, with each pack containing 5 random cards. The set features Mega Evolution Pokémon, such as Mega Lucario and Mega Gardevoir, and is known for its unique Japanese artwork. 
Box contents
Quantity: 30 booster packs per box
Cards per pack: 5 cards
Language: Japanese
Set: Mega Brave (Set Code: M1L)
Theme: Return of Mega Evolution Pokémon 
Key features
Authentic Japanese Product: This is an official Japanese release.
Unique Artwork: The cards feature special Japanese artwork not found in English sets.
Release Date: August 1, 2025.
Target Audience: Collectors and competitive players looking for unique designs and powerful Mega Evolution cards like Mega Lucario ex and Mega Gardevoir ex.