MRK Holdings Inc. operates in Japan's women's underwear and related businesses through its subsidiaries. Its segments include Women's Underwear and Related Businesses, Maternity and Baby Related Business, Wedding/Banquet Related Business, and Others. The company offers women's underwear such as foundation and lingerie, body care cosmetics, custom-made insoles and specialized shoes, original supplements and health food, apparel and miscellaneous goods for women and babies, and maternity wear, nursing wear, maternity underwear, baby wear, and baby shower gifts. It is also involved in wedding and banquet related business, body shaping using women's underwear, operation of wedding halls, cafes, restaurants, and other food and beverage establishments, as well as hair salons, and event party activities. Products are sold through directly managed stores, e-commerce sites, online shops, and e-commerce shopping malls. Formerly known as Maruko Co., Ltd., it changed its name to MRK Holdings Inc. in October 2018. Incorporated in 1978, it is headquartered in Osaka, Japan, and is a subsidiary of RIZAP GROUP, Inc.