TETSUJIN Holdings, Inc. operates karaoke stores in Japan. It offers karaoke distribution systems; mobile content, such as ringtones, lyrics, and deco-mail; android dictionary, a curation site that publishes articles for Android users; and content collaboration and in-store media products. The company also operates restaurants; and nail, eyelash extension, eyebrow, and head spa salons. In addition, it manages and operates real estate facilities. The company was formerly known as TETSUJIN Inc. and changed its name to TETSUJIN Holdings, Inc. in February 2024. TETSUJIN Holdings, Inc. was incorporated in 1999 and is headquartered in Tokyo, Japan.