Profiles of Directors

Representative
Director and
President
Hiroki Kozuma

Born in Miyazaki Prefecture in 1974. Graduated from the Department of Sociology, College of Sociology, Rikkyo University. After graduating from university, spent two years gaining hands-on experience in luxury goods purchasing operations at a major second-hand branded goods retailer/buyer. Subsequently served as Executive Vice President of Ginzo Corporation, overseeing domestic and overseas B2B purchasing and wholesaling operations for watches and luxury goods. Went independent in 2005 and founded Ippu Kishi LLC, which laid the foundation for today’s Watchnian Group. Since then, launched various operating companies tailored to market needs, including luxury goods purchasing and B2B auction businesses.
Became Representative Director and President of Ippu Kishi Holdings Corporation (presently Watchnian Group Corporation) in 2018. In 2026, also assumed the position of Representative Director of Watchnian Corporation, a major operating company formed through a subsidiary merger.

Director
Tatsuya Kimoto

Born in Miyazaki Prefecture in 1977. Joined a major dealer of second-hand branded goods and jewelry in 1995 and was assigned to the product management department, where he learned hands-on purchasing operations. Took over his family business in 1998, engaging in the pawnbroking and purchasing of branded goods, watches, and jewelry, and became representative director of the company in 2009.
Joined Ippu Kishi Co., Ltd. (presently Watchnian Corporation) in 2016, taking command of operations as managing executive officer and general manager of the general headquarters, and then became director of the company in 2021. Became director of Ippu Kishi Holdings Corporation (presently Watchnian Group Corporation) in the same year. In 2026, also assumed the position of director of Watchnian Corporation, a major operating company formed through a subsidiary merger.

Director
Harutoshi Oe

Born in Yokohama, Kanagawa, in 1968. Graduated from Tokyo Institute of Technology. After graduating from university, joined Recruit Co., Ltd. Started his career as an editor and served as chief editor of used car magazines and housing magazines. Joined YASURAGI CO., LTD. (currently KATITAS Co., Ltd.) in 2013. As executive officer and head of the marketing department, oversaw a wide range of areas including marketing, branding, and public relations. Became director of the company in 2019.
Appointed director of Watchnian Group Corporation in 2023. In 2026, also assumed the position of director of Watchnian Corporation, a major operating company formed through a subsidiary merger.

Director
Kenji Yuri

Born in Kanagawa Prefecture in 1982. Graduated from the Faculty of Commerce, Hitotsubashi University. Joined Nikko Citigroup Limited (currently Citigroup Global Markets Japan Inc.) in 2005, working as an equity analyst covering the electronic components sector. Joined Frontier Management Inc. in 2008 to provide management consulting services to companies in sectors such as retail and manufacturing. Joined Regional Economy Vitalization Corporation of Japan (REVIC) in 2016, engaging in deal sourcing for public-private funds and hands-on support for portfolio companies.
Joined Ippu Kishi Holdings Corporation (presently Watchnian Group Corporation) in 2021. Appointed director of the company in 2024.

List of
directors

Hiroki Kozuma	Representative director and president
Tatsuya Kimoto	Director
Harutoshi Oe	Director
Kenji Yuri	Director
Hideo Nagatsuyu	Outside auditor
Takashi Nishimura	Outside auditor
Rumi Uemura	Outside auditor
Shinichi Yagi	Outside auditor（Audit and Supervisory Committee）
Kentaro Fujino	Outside auditor（Audit and Supervisory Committee）
Naoki Kadotani	Outside auditor（Audit and Supervisory Committee）
Tomoya Yoshikawa	Outside auditor（Audit and Supervisory Committee）