Union Arena Demon Slayer UA05BT Booster BoxIn stock. Ships from UK. You will receive one sealed booster box of Union Arena Demon Slayer UA05BT Each box contains 20 booster packs Each pack contains 8 cards All cards are Japanese Please note: these boxes are sealed at the front only rather than shrink wrapped, which is standard for these booster boxes. They are taken from a sealed case & have not been opened in any way.