The Mega Symphonia (m1S) Pokémon Center set is a special Japanese release of two booster boxes of the "Mega Symphonia" expansion, along with accessories like deck sleeves, a deck case featuring the character Acerola, a card storage box, and dividers, all centered around the Pokémon TCG.

Contents of the Set:

• 2 boxes of the Mega Symphonia (m1S) expansion pack (60 packs total)
• 1 set of "Acerola" deck sleeves (64 sleeves)
• 1 "Acerola" deck case (includes 2 dividers)
• 1 card storage box
• 4 dividers for the card storage box