This is a set of two CDs: M!LK's Ribbon, Limited Edition A and Limited Edition B. They are new and unopened, but Limited Edition A has a crack on the bottom left of the case (see image 2). Also, this is the event edition, so there are no serial numbers. If you'd like, I can also include the regular edition of Ribbon, so please let me know. Available for immediate purchase. M!LK: Hayato Sano, Daichi Shiozaki, Jinto Yoshida, Shunta Sono, Jotaro Yamanaka