Mainichi Broadcasting System, Inc. (株式会社毎日放送, Kabushiki-gaisha Mainichi Hōsō, MBS) is a broadcasting station in Osaka, Japan, affiliated with Japan Radio Network (JRN), National Radio Network (NRN), Japan News Network (JNN) and TBS Network, serving in the Kansai region. MBS is also one of the major stockholders of the following networks : Tokyo Broadcasting System Holdings, Inc.