TETSUJIN, Inc. engages in the management of karaoke rooms. It operates through the following segments: Karaoke Room Management, CP, and Others. The Karaoke Room Management segment operates karaoke shops under the name Karaoke no Tetsujin. The CP segment develops and provides mobile contents. The Others segment sells audio equipment and leases properties. The company was founded on December 14, 1999 and is headquartered in Tokyo, Japan.