ONTSU Co.,Ltd. rents and sells karaoke equipment and related products, and manages fitness clubs in Japan. The company operates through Karaoke-related Business; Sports Business; and IP Business segments. It is also involved in the leasing of stores and residences; and operation of coin parking lots. In addition, the company operates 2 sports clubs under the JOYFIT name, 18 24-hour fitness gyms under the JOYFIT24 name, 7 fitness gyms under the FIT365 name, and 1 yoga studio under the LAVA name. Further, it is involved in the selling, leasing, and marketing of real estate. The company was incorporated in 1981 and is headquartered in Osaka, Japan.