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Executives and Advisors


Yohei Shibasaki
Chief Executive Officer
Born in Tokyo in 1975, spent his early years in London. Joined Sony after graduating from Sophia University, Tokyo. Conducted business with global companies such as Samsung, Motorola, and Nokia. Established Fourth Valley Concierge Corporation after leaving Sony in 2007. Visiting lecturer at Sophia University. Young Global Leaders(YGL) 2013, the World Economic Forum (Davos Forum). Committee member of the Foreign Workers' Employment Policy Survey Project, administered by the Ministry of Health, Labor and Welfare of Japan.
Yoshio Hamada
Executive Vice President and Director
After graduating from Ritsumeikan University with a degree in Business Management, joined Sony Corporation. Assigned in Sony Hong Kong and Sony China where he contributed to expanding the share of DVD optical pick up, launching the Blue ray business of Chinese companies, etc. Joined Fourth Valley Concierge in 2010.
Aki Takeda
Executive Director
After graduating from Sophia University, joined INCS Inc., a manufacturing consulting company where she was assigned to the Business division to provide process solutions to leading global manufacturing companies. After resigning, participated in the foundation of Fourth Valley Concierge in 2007.
Katsuhiro Hashimoto
Executive Director
After graduating from Waseda University, joined Venture Link Corporation, a listed consulting firm. He was assigned to HR development division where he contributed to the expansion of fresh graduate recruitment. Joined Fourth Valley Concierge in 2009 and has been responsible for expanding the global recruiting business.
Tomohiro Iga
Executive Director
Graduated from school of commerce at Hitotsubashi University in 1994. Joined Long-Term Credit Bank of Japan Ltd. and was in charge of corporate revitalization. After 2003, joined Private equity fund, Kiacon and was in acquisition project to one the Japanese biggest retail companies. In 2005, participated in establishment of Revamp Corporation and in charge of several investment projects, managing administrative department of the client and CEO of the client . In 2014, joined Fourth Valley Concierge.
Shigehide Onoda
Graduated from Aoyama Gakuin University in 1999. Joined Hitachi, Ltd. and engaged in IT business in Government Sales Division. In 2005, joined Dell and contributed to expanding global market share of PC business. After gaining an MBA degree from Vanderbilt University, joined Diagnostics Division at Johnson & Johnson in 2009. After engaged in marketing in the US headquarter, led marketing in Clinical Laboratory business in Japan. Joined Fourth Valley Concierge in 2016.
Takayuki Hasegawa
After graduating in 1998 from the English Language department in Foreign Language studies from Sophia University, joined the company CSK (currently known as SCSK), as a system engineer (SE;PM), primarily responsible for constructing systems aimed at global distribution industries. From 2005, began engaging in organisational operations as a line-manager. After becoming independent in 2007, founded the company DMZ, which offers services in web development and systems; during the same period was inaugurated as the representative director. From October 2017, joined 4th-Valley Concierge.

Advisory Board Members

Nobuyuki Idei
Joined Sony Corporation in 1960. Served as president from 1995 to 2000 and as chairman and Group CEO from 2000 to 2005. Currently founder and CEO of Quantum Leaps Corporation, president of non-profit organization, Asia Innovators' Initiative, as well as director of Accenture, Baidu, Freebit Co.,Ltd., Lenovo Group, and Monex Group. Also takes roles of Professor at Overseas Education College of Shanghai Jiao Tong University, and advisory board member of DeNA.
Hirotaka Takeuchi
After graduating from ICU in 1969,received MBA and PhD from UC Berkley. Has working experience at McCann Erickson and McKinsey & Company. Became professor emeritus of Hitotsubashi University and Harvard Business School Professor in 2010. “World’s TOP 10 MBA Professors for internal company training”
Masami Komatsu
After graduating from university in 2000, founded Music Securities, Inc, providing micro-investment platforms such as “music fund” to support artists. Converted it to a joint-stock corporation in 2002, takes the role of CEO. Degree from Waseda University Graduate School of Finance, Accounting and Law. Elected as the World Economic Forum Young Global Leaders 2013.
Severine Pin
Graduated from HEC. School of Management in 1993. Worked in the field of consulting and finance at international Accounting firm, Arthur Andersen and Unibail, the largest commercial real estate investment firm in the EU. After 6 years in Switzerland working in private banking she became CFO for Eurosport, a British TV channel. Joined Fourth Valley Concierge in 2011.


Yoshinori Yamada
Joined Yasuda Mutual Life Insurance Company (Current Meiji Yasuda) in 1969. After leaving Meiji Yasuda Life Insurance, he took on roles such as President and Director of insurance confirmation company JC, Audit & Supervisory Board Member of Mizuho Trust and Banking co., Ltd. He established NACRE group Japan, Japan Asset Protection Center in 2012 of which he is the Chairman. Outside Audit member of Japan M&A Center.
Hiroto Kawano
Part-time Auditor
Certified Accountant
1997 Join Ota-Showa Accounting Firm (current Ernst & Young ShinNihon LLC)
2001 Join Nikko Cordial Securities Inc. (current SMBC Nikko Securities Inc.)
2003 Establish Kawano Accounting Firm. President.
Has rich experience in IPO supports, and consulting in the fields of management/accounting/tax affairs.

Legal Advisors

Tatsuki Nakayama
Legal Advisors
Graduated from both University of Tokyo and National University of Singapore, Faculty of Law. Joined law firms such as Miyake & Yamazaki and Drew & Napier LLC. Currently act as a represented lawyer and international legal advisor in Nakayama & Partners. Have been in important positions at the Pacific Rim Bar Association (Inter-pacific Bar Association)