Colowide Co., Ltd. engages in the management of directly managed and franchise restaurants. It operates through the following segments: Colowide MD Co., Ltd., ATOM Corp., Reins International, Inc., Kappa Create Co., Ltd., OOTOYA Holdings Co., Ltd., and Others. The Colowide MD Co., Ltd. segment handles food product development, procurement, manufacturing, and distribution services. The ATOM Corp. segment operates directly managed restaurants such as Steak Miya, Nigiri no Tokubei, and Neneya. The Reins International, Inc. segment manages restaurants such as Yutaka Yasai, Dokan Dokan, Kamadoma, Tedzukuri Izakaya Amataro, and FRESHNESS BURGER. The Kappa Create Co., Ltd. segment includes restaurants that offer sushi and baked goods. The OOTOYA Holdings Co., Ltd. segment handles the operation of Ootoya Gohan Dokoro restaurants both in Japan and overseas. The Others segment engages in the development and sale of self-ordering services for the restaurants; sale of baked confectionaries and raw chocolates; and catering business. It also provides management guidance for franchise stores. The company was founded on April 19, 1963 and is headquartered in Yokohama, Japan.