The Japanese "Pokémon Night Wanderer" (SV6a) booster box is the sixth set in the Scarlet & Violet era, featuring dark-themed Pokémon like Pecharunt, Okidogi, and Munkidori, and includes 64 base cards plus 30 secret rare cards. Each box contains 30 packs, with each pack having 5 cards, and it was released on June 7, 2024. This set is the Japanese counterpart to the English expansion "Shrouded Fable". 
Key features of the Night Wanderer booster box
Set and era: It is the sixth Japanese set in the Scarlet & Violet era.
Card content: The set features the antagonist Pokémon Pecharunt and other new Pokémon, as well as dark-themed and twilight-themed Pokémon and trainers.
Card total: It includes 64 base cards and 30 secret rare cards.
Box configuration: A standard box contains 30 booster packs.
Pack contents: Each booster pack contains 5 Japanese-language cards, which can include a mix of common, uncommon, rare, and holographic cards.
Release date: June 7, 2024.
English counterpart: It is the Japanese equivalent of the English expansion set, "Shrouded Fable".