After the experiences of auditing at the foreign-owned accounting office, and assessment of tax return at the accounting office in Nagano, he established independent CPA and Licensed Tax Accountant Office in November 1977.

September 1977: Registered in CPA. No.5968
November 1977: Registered in Licensed Tax Accountant No.39757
November 1977: Registered in Notary Public No.710130
Onetime Chairman of The Japanese Institute of Certified Public Accountants in Nagano
Onetime Manager of The Japanese Institute of Certified Public Accountants in Tokyo
Onetime Representative Employee of ChyuoAoyama Audit Corporation