A Japanese Weiss Schwarz "Sword Art Online Alternative: Gun Gale Online II" Extra Booster box contains 6 packs, with each pack containing 6 cards (4 non-foil and 2 foil). The set includes about 60 common types plus parallel cards randomly selected from the 60 normal types and includes cards with hot-stamped signatures from creators and voice actors. The box is sold by the manufacturer Bushiroad and features cards from the second season of the anime. 
Contents and details
1 booster box contains 6 packs.
1 pack contains 6 cards: 4 non-foil and 2 foil.
The set includes approximately 60 normal types + parallel cards randomly selected from the 60 normal types.
The cards feature hot-stamped signatures from creators and voice actors of the series.
The product is a Japanese release from Bushiroad.
The cards can be used with other cards in the "GGO/" or "Ggg/" series.