Keiichi Matsui

Commerce21 Corp. develops and markets software. It deals with electronic commerce site construction and data center operation. The company was founded in December 1999 and is headquartered in Tokyo, Japan.

Part of Work Happiness Consulting KK, Work Happiness, Inc. is a consulting Japanese company that focuses on creating human resources based on "mission discovery", organizational transformation, innovative business, and creating a team full of work happiness. The company is based in Tokyo, Japan. Work Happiness offers team building training that can bring about significant changes to the team by studying with the members who work together. Work Happiness was acquired by Work Happiness Consulting KK from S-Pool, Inc. on February 28, 2011 for $1.27 million.

Weblio, Inc. offers an online general dictionary, Weblio. Its services include net media, translation, personnel, online English conversation, overseas consulting, property and casualty insurance, study abroad support, and other businesses. The company was founded by Naoya Tsujimura on August 12, 2005 and is headquartered in Tokyo, Japan.

Spika, Inc. develops and operates mobile applications. Its mobile platform, Nailbook, operates as a social network application that offers nail design and information services. The firm’s business activities also include web content and site design and development; sales promotion, advertisement delivery, consulting, and market research via the Internet; business model planning, research, development, and sales; and intellectual property rights licensing and maintenance. The company was founded by Isao Kouda on April 1, 2014 and is headquartered in Tokyo, Japan.

Retro, Inc. provides online shopping services. It is a construction and management information services using the Internet. The company was founded by Shingo Suzuki on May 20, 2014 and is headquartered in Tokyo, Japan.

Crevo, Inc. operates and manages a design and animation crowd sourcing site. Its sire allows users to choose a creator from the portfolio page and then order various video work, such as promotion videos for an application, or a YouTube ad with custom scenario and characters. The company was founded in March 2014 and is headquartered in Tokyo, Japan.

Carnol, Inc. manages and operates a test drive online booking website. The company was founded by Kohei Hosoe and is headquartered in Tokyo, Japan.

Whiteessence Co., Ltd. is a dental clinic franchise business that supports the management of dental clinics by providing services such as dental esthetics, whitening, office whitening, and cleaning. The company is based in Tokyo, Japan and was founded in 2003 by Yoshiaki Sakamoto. The Japanese company offers safe consulting before and after opening a dental clinic and provide management know-how and services necessary for dental clinic management stability and expansion. The company organizes a franchise dental chain that operates more than 220 stores nationwide from Hokkaido to Okinawa, and about 300,000 people go to a member dental clinic annually. The company also develops, manufacture, and sell various original oral care products directly to customers through high-quality distribution channels such as general dental clinics, ec sites, and luxury variety shops.

ClipLine Inc. engages in the development and operation of technology acquisition support platform for service industry. The company was founded by Yuto Takahashi on July 11, 2013 and is headquartered in Tokyo, Japan.

YUMEMI, Inc. provides mobile digital marketing systems, consulting, and support services. It also involves in digital media content management and operation services. The company was founded on January 27, 2000 and is headquartered in Tokyo, Japan.

Little Discovery KK provides information systems development and data management support. The company is headquartered in Tokyo, Japan.

Part of Double Standard, Inc., Aster's KK is a company based in Kanazawa, Japan that provides services in web system development, website creation, and server construction. The Japanese company develops systems, produces websites, and builds servers, responding to customer requests by developing CMS and using big data. The company was founded in 2014 by Hideo Maesaka. Aster's KK was acquired by Double Standard, Inc. on March 30, 2023.

Space Bd, Inc. provides satellites related services. The firm also provides targeted to private companies, research institutes and governments that develop small satellites across the world. The company was founded by Masatoshi Nagasaki and Tohru Akaura on September 5, 2014 and is headquartered in Tokyo, Japan.

Hosty, Inc. engages in the operation of unmanned hotels. It also handles internet media, real estate consulting, translation, and house renovation businesses. The company was founded by Hiroki Yamaguchi in 2015 and is headquartered in Fukuoka, Japan.

IF Holdings KK is an investment holding private company based in Tokyo, Japan.

Iwaya Giken Co., Ltd. is a Japanese company located in Sapporo. The firm designs, develops and manufactures gas balloons & airtight cabins for travel. It was founded in 2016 by Keisuke Iwaya.

Incubate Fund KK (Incubate Fund) is an Independent Venture Capital firm founded in 2010 by Keisuke Wada, Honma Masahiko and Yusuke Murata. Incubate Fund is headquartered in Tokyo.