- Awards
Eleven Nishimura & Asahi Lawyers Listed in The Best 100 Business Lawyers
Nishimura & Asahi is pleased to announce that the following lawyers have been recognized in their respective practice areas in “The Best 100 Business Lawyers Selected by Lawyers and In-House Legal Departments 2025” jointly presented by Bengo4.com and Weekly Toyo Keizai.
<Corporate>
Yo Ota (2nd), Kazuhiro Takei (4th), Taisuke Igaki (15th)
<M&A>
Naoko Shimura (6th), Mitsuhiro Harada (11th)
<Crisis Management / Compliance>
Hiroshi Kimeda (1st), Kaku Hirao (11th)
<Labor / Employment>
Yuri Sugano (10th)
<Intellectual Property>
Hitomi Iwase (6th)
<AI/IT>
Shinnosuke Fukuoka (5th)
<Tax>
Tsuyoshi Ito (7th)
People

Mr. Ota has a wealth of practical international and domestic legal experience, focusing on the areas of hostile takeovers, shareholder activism, M&A transactions (including cross-border deals), corporate governance and other corporate matters, domestic/international taxation, and personal information/data protection, and works on a wide range of corporate legal affairs cases. In the NIKKEI’s "Most Successful Lawyers" awards he was ranked in the corporate law category (1st) and the tax category (2nd) in 2024; in the corporate law category (1st) and the M&A category (1st) in 2023; and in the corporate law category (1st) in 2022. In addition, he dedicates himself to research and writing activities that bridge academia and legal practice on cutting-edge issues related to the Companies Act, the Financial Instruments and Exchange Act, tax law, the Act on the Protection of Personal Information, etc. He has edited and authored many books and papers, such as "Introduction to Corporate Governance" (Iwanami Shinsho), "Hostile Takeovers and Activists" (Iwanami Shinsho), “Schemes and Tax Issues of M&A and Corporate Restructuring, 4th Ed.”, “Corpus Juris M&A - Completely Revised Edition (first volume) (second volume)”, “Handbook on Share Options (Fifth Edition)”, “Corpus Juris Series - Personal Information Protection Legislation (Global)”, “Handbook on Class Shares”, etc.

Mr. Kimeda’s main areas of practice are Corporate Crisis Management and Litigation. As for Corporate Crisis Management, he has extensive experience in corporate scandal cases, including window-dressing, misrepresentation of financial statements, insider trading, antitrust (bid rigging, price cartels, and abuse of dominant position), product defects, misleading representations of products, divulging confidential information, bribery, political funding, money laundering, breach of industrial regulations, and factory accidents. In these types of cases he has specific expertise on the issues of internal investigations, third party committee investigations, defending against criminal and administrative investigations, public relations, rebuilding compliance systems, reforming corporate governance, and handling the related civil litigation. He also serves as an outside whistleblower hotline channel for a number of companies. As for litigation, he has considerable experience in tax disputes, shareholders disputes, and other types of corporate litigation. He is the author of numerous legal articles and has also been involved in the process of making laws and regulations. He has been recognized as one of the “Most successful lawyers” by the NIKKEI for the last several years as below.
2025 Compliance category 2nd
2023 Corporate Crisis Management category 1st
2021 Corporate Crisis Management category 1st
2020 Corporate Crisis Management category 1st
2018 Corporate Crisis Management category 2nd
2014 Corporate Crisis Management category 2nd
2011 Corporate Crisis Management category 3rd
2024 Corporate Legal Affairs category 17th
2022 Corporate Legal Affairs category 9th
2016 Corporate Legal Affairs category 10th
2015 Corporate Legal Affairs category 8th
2013 Corporate Legal Affairs category 2nd
2012 Corporate Legal Affairs category 4th
Corporate Crisis Management
- Corporate Crisis Management Newsletter (April 2018) UK Bribery Act: First Case on “Adequate Procedures” under the UK Bribery Act
Natural Resources & Energy
- UK Bribery Act: First Case on “Adequate Procedures” under the UK Bribery Act (April 2018)

Since joining the firm, Mitsuhiro Harada has been actively involved in Mergers & Acquisitions and has represented Japanese or non-Japanese buyers or sellers in numerous cross-border transactions in varied industries, including stock and asset acquisitions, private equity and venture capital investments, joint ventures and strategic alliances. He has recently become deeply engaged in international transactions, particularly in assisting Japanese companies with expanding into East and South East Asian markets. In addition, he has provided a broad range of legal services in the field of general corporate matters, including corporate governance issues and civil or commercial disputes.

His main practice area is corporate crisis management and litigation. He is also highly knowledgeable and experienced on matters involving foreign investigations and regulatory authorities. He has dealt with many cases in relation to investigations by the Securities and Exchange Surveillance Commission, the Japanese Fair Trade Commission, the Japanese Public Prosecutor’s Office, etc., as well as foreign authorities such as the U.S. Department of Justice. He has also dealt with a variety of cases such as misconduct by executives and employees, violation of environmental regulations, violation of the regulation regarding pharmaceutical and medical equipment, etc. In addition to cases that require emergency responses, he has advised many companies to build effective whistleblowing systems and anti-bribery compliance programs, and he has assisted with due diligence procedures from a compliance perspective.

Hitomi handles patents, copyrights, trademarks, trade secrets, and other IP-related matters in multiple business sectors, including IT, life sciences and healthcare, machinery, food, fashion, environment and energy, entertainment, financial services, and e-commerce. Ms. Iwase’s expertise encompasses all forms of IP transactional work, both cross-border and domestic, including licensing, strategic alliances, joint development, and asset transfers, as well as various types of IP disputes, including patent/trademark infringement litigation. Hitomi also assists clients in anti-counterfeiting and in the development of IP portfolios and prosecution strategies. Hitomi regularly advises clients on emerging legal issues relating to the latest technology, such as IoT and artificial intelligence (AI), as well as on complex system-related transactions and disputes over such transactions. In the area of data privacy, Hitomi provides extensive advice on data protection and privacy compliance, including on establishing global compliance systems and incidents such as data breaches. Hitomi also advises on related areas such as e-commerce, advertising, and consumer protection.
External Seminars
- Asia Privacy Bridge Forum 2023
External Seminars
- Data Protection, Privacy and AI in the Digital Age

In the area of Robotics/Artificial Intelligence, Shin Fukuoka mainly handles AI, Big Data and IoT. He acts as a Member of The Cabinet Office’s “Committee on Human-centered AI Social Principles” and Committee Member of the Ministry of Economy, Trade and Industry Investigative Commission on "The AI and Data Contract Guidelines Review Committee". He has also contributed to many publications, including "Law and Strategy of the Internet of Things and Artificial Intelligence", "Artificial Intelligence: Law and Issues" and "Data Contract Law". In the area of Corporate, he mainly handles M&A and Corporate Governance. In the area of Restructuring/Insolvency, he has been involved in numerous restructuring and insolvency cases, with a focus on cross-border insolvency cases, representing both debtor parties and creditor parties. Most recently, he represented Daiichi Chuo Kisen Kaisha and Japan Airlines as a legal counsel of the debtor and Elpida, Takefuji and Mt.Gox as a creditor’s counsel. He has also handled a number of real estate related disputes.
Finance Law
Robotics / Artificial Intelligence
- Legal Risk Management and Governance Framework for the Use of AI

Naoko handles various types of M&A transactions, such as global/domestic acquisitions and alliances, joint venture transactions, and group reorganizations. She also has extensive experience providing strategic advice on various legal issues commonly faced by corporate clients, including those relating to corporate governance, compliance, commercial contracts/transactions, employment, and crisis management.

Tsuyoshi Ito has significant experience in tax counseling and tax controversies and has represented major corporations in numerous tax disputes and tax lawsuits. In March 2021, he won a significant corporate tax dispute that challenged a tax assessment of approximately USD 367 million in taxable income before the Tokyo High Court after a protracted seven-year battle. In August 2014, he won a tax dispute involving securitization transactions of domestic housing loans before the Tokyo High Court. In addition to excellent achievements in major tax disputes, he generally advises on domestic and cross-border taxation issues in various transactions, such as M&A, joint ventures, fund formation and equity/debt investments.

He has handled more than 200 M&A deals for listed and private companies, both in Japan and overseas, by utilizing his practical experience obtained in the United States, which has allowed him to establish a strong reputation in the fields of business revitalization, bankruptcy, and litigation. He also deals with a wide variety of projects, which range from startup acquisitions to tender offer deals. In the field of disputes, he mainly deals with large and complex proceedings, and also has experience in international arbitration and mediation. Since he counts a large number of listed companies and universities as his clients and also serves as an outside director/auditor of various listed companies, he has been heavily involved in businesses run by manufacturers and retailers, as well as those in the healthcare industry and real estate industry, and those related to IT, human resources, and the operation of universities. He has accumulated a wealth of legal knowledge and experience and advises clients on a wide range of legal topics, including corporate law, commercial law, personnel and labor law, intellectual property, and antitrust.
Nishimura & Asahi Seminars
- The latest trends and practices in the pharmaceutical industry

Yuri is specialized in Restructuring and Insolvency and also Labor Law. Especially, she is well-known in the restructuring market given her outstanding expertise and experience in cross-border restructuring and insolvency cases. She has plenty of experience providing foreign clients with restructuring and business closure of their Japanese subsidiaries. She also supports foreign clients on a wide range of labor issues, including labor disputes, personnel restructuring and general labor law matters on a daily basis. She is actively engaged in diversity and inclusion promotion activities. Utilizing her expertise as a labor-law specialist, as well as her experience as a member of the DE&I Promotion Committee at Nishimura & Asahi and as a director of LLAN (lawyers for LGBT & Allies Network), she has supported clients’ D&I initiatives.
External Seminars
- From Build-Up to Breakdown: Navigating Construction Company and Real Estate Distress
External Seminars
- Recovery, Valuation and Realisation of Digital Assets
External Seminars
- IADConnects in Tokyo


Kazuhiro Takei has extensive expertise representing Japanese public companies on a variety of matters, including M&A, corporate governance and digital transformation, corporate law, securities law, shareholders meeting, consumer law, and tax law.