This is a collaboration item between Taiko no Tatsujin and the Skylark Group. It can be obtained from a special gachapon machine that can be used with lucky coins given to children in elementary school or younger who order from the Skylark Group's restaurants. It's quite difficult for adults to get this item. If you collect them, you can create original sheet music! Plum: Set of "Fuusen" and "Ka-Kac" Includes instructions, no round case. Opened once. Please understand that this is a home-stored item from a private seller before purchasing.