NanaOn-Sha.
NanaOn-Sha (株式会社七音社 Kabushiki-Gaisha Nana On-Sha) is a Japanese rhythm music and motion game company that was founded in 1993 by Masaya Matsuura. NanaOn-Sha is the company that created the PaRappa The Rapper series, which was widely credited as the first modern and influential rhythm game.