Tatsuzo Irikawa

Established in 1999, BikeBros, Inc. is engaged in the operations of motorcycle portal websites. The company's activities include web services, publishing services, and membership services related to motorcycle sales. BikeBros is based in Tokyo, Japan and operates across the country through its offices in Hyogo, Okayama, and Kyushu Prefectures.

Part of Proto Corp., King's Auto KK is a Japanese company that operates goonet exchange, a vehicle search site that aims to deliver high-quality used cars from Japan to users around the world. The company is based in Hamamatsu, Japan. The company has exported to over 50 countries, with a strong presence in Asian countries such as Hong Kong, Myanmar, Malaysia, and Sri Lanka. In addition to these countries, the company has also actively exported to other areas such as Europe, Africa, and Oceania.

Part of Proto Corp., Proto Malaysia Sdn. The company is based in Kuala Lumpur, Malaysia. Bhd. engages in used car magazine publication and web-based used car advertisements. Proto Malaysia Sdn. was acquired by Proto Corp. on September 30, 2011 for $37.11 million.

Carnewsnet Co., Ltd engages in management of automobile-related websites. The company was founded on December 7, 2011 and is headquartered in New Taipei, Taiwan.

Part of Proto Corp., Autoway Co., Ltd. is a Japanese company that specializes in importing summer tires, studless tires, and wheels directly from manufacturers around the world. The company is based in Miyako-gun, Japan. With cumulative sales of 32 million units, Autoway has become a leading provider in the industry, always having 800,000 units in stock. For any inquiries, customers can contact the call center for assistance. Autoway Co. was acquired by Proto Corp. from Mitsuya Shoji KK on April 01, 2013.

Part of Proto Corp., Tire World Kan Best KK is a Japanese company that retails automotive parts and accessories. The company is based in Sendai, Japan. Tire World Kan Best KK was acquired by Proto Corp. from Yamauchi KK (Miyagi) on April 01, 2015 for $17.76 million.

Part of EQT AB, Proto Medical Care Co., Ltd. is a Japanese company that provides medical and nursing care services. The company is based in Tokyo, Japan. The company was founded in 2004. Proto Medical Care Co. was acquired by Benesse Holdings, Inc. from Proto Corp. on June 01, 2021 for $39.15 million.