Accounting & Financial Professionals
Who Enhance Decision-Making Precision.
Supporting Management Decisions with
Highly Reliable Financial Data.

Our accounting and financial experts enhance the reliability of your financial information through practical,
hands-on support to empower your management decisions. We deliver specialized accounting and
financial services to guide you through critical business phases, such as IPO preparation, M&A, and
establishing internal management structures.

We deliver end-to-end accounting, finance, and internal control services,
including stock valuation, financial due diligence, internal control advisory,
IPO readiness support, financial closing assistance, and post-merger integration (PMI).

As an Independent firm led by a former major audit firm professional,
we offer tailored engagement models aligned with our clients’ needs,
while maintaining a strong focus on cost-effectiveness and quality.

Engagements may range from ad-hoc advisory services to ongoing support or long-term project assignments.
Please contact us to explore how we can partner with you.

Service

Selected Experience

We have conducted financial due diligence for manufacturing and telecommunications device sales companies, performed stock price valuations for manufacturing companies considering exits, and provided post-merger integration (PMI) support to leasing businesses.

We provided support to companies in manufacturing, services, staffing, and other industries to accelerate their fiscal year-end closing procedures and establish systems for managing actual vs. budgeted performance.

We provided listing preparation support and J-SOX compliance assistance to manufacturing and service companies preparing for listing. This includes experience supporting Hong Kong listings.

Message

Thank you for visiting our website.

Our firm was established with the mission of supporting business owners who are busy managing and growing their companies. By providing practical accounting and financial expertise at fair and reasonable fees, we aim to help clients strengthen their management foundations while also improving efficiency and controlling unnecessary costs.

Many small and mid-sized companies, as well as mid-cap listed companies, wish to benefit from professional accounting services but often find the fees charged by large audit firms or major consulting firms prohibitively expensive. We believe that high-quality professional advice should be accessible and practical for growing companies.

Our firm is led by professionals with backgrounds at major audit firms and extensive experience in listed company audits, IPO preparation support, and internal control evaluation engagements. Based on this experience, we provide flexible services tailored to each client’s specific needs. Our support can be offered through hourly consultations, project-based engagements, or ongoing advisory arrangements.

In addition to assisting with day-to-day accounting and financial matters, we support a wide range of corporate initiatives, including business planning for new ventures, IPO preparation projects, and internal control development. We also provide financial due diligence and valuation services in connection with corporate acquisitions and investments.

We offer an initial consultation free of charge. If you are facing challenges related to accounting, finance, or corporate management, please feel free to contact us. We would be pleased to discuss how we can support your organization.

Hideki Sasabe
Principal
Certified Public Accountant (Japan)

Firm Overview

Firm Name

Hideki Sasabe CPA Office

Address

201 Nogizaka Business Court,
1-20-2 Minami-Aoyama, Minato-ku, Tokyo

Representative

Hideki Sasabe

Phone

+81-3-3484-0878

Date of Birth

September 4, 1972

Place of Birth

Tokyo, Japan

Biography

March 1996
Graduated from Yokohama National University, Faculty of Business Administration, Department of Accounting and Information Systems.

October 1996   
Passed the Second-Stage Certified Public Accountant Examination. Joined Ota Showa & Co. (currently Ernst & Young ShinNihon LLC). While primarily in charge of statutory audits for major electrical appliance manufacturers and manufacturer-affiliated leasing companies within the Domestic Audit Department, also gained extensive experience supporting several companies in their preparation for going public (successfully listing on the Second Section of the Tokyo Stock Exchange).

August 2008
Resigned from Ernst & Young ShinNihon LLC and established an independent CPA practice.

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