This is a set of CDs and books that were distributed monthly only to those attending the Shichida Method classrooms. Currently, only the books are distributed, so the CDs are valuable. The second English CD, the Virtual Knowledge CD, and Gururin are also included. Brain development CD set for infants, all 46 volumes - Target age: Infants - Format: CD - Language: Japanese *Please read the notes in the image. These have been stored for several years, and I have randomly selected and confirmed that the CDs play.