Risk management and investigations: Independent local firms in Japan

Anderson Mori & Tomotsune

Anderson Mori & Tomotsune fields a team with a broad range of expertise, including fraud, bribery, and cartel matters, with experience handling internal and governmnent investigations as well as both criminal complaints and criminal defense. Co-heads Kazuhilo Kikawa, Yoshihiro Kai and Hidetaka Miyake all have backgrounds as public prosecutors, and provide a foundation of expertise in crisis management, corporate compliance and litigation. Kazuo Sakakibara joined the firm in November 2021 as an Of Counsel, and brings significant experience in bribery regulations, information leakage, and government investigations.

Other key lawyers:

Kazuo Sakakibara


‘We recognize this law firm as one of the most trusted law firms in Japan, with a large number of experienced lawyers.’

‘Mr. Miyake, whom we trust, is a lawyer who promptly provides specific and accurate support/advice from the customer’s perspective, based on his expertise and outstanding background.’

Key clients

Nippon Light Metal Holdings Company, Ltd.

Hino Motors, Ltd.

Taiko Pharmaceutical Co., Ltd.

JA Fukuoka Keichiku

Demae-can., Ltd.


Work highlights

  • Advised Nippon Light Metal Holdings Company Ltd in organising the Special Investigation Committee to investigate compliance issues of aluminium products manufacturing.
  • Administrative defence against the Consumer Affairs Agency’s administrative order on an alleged violation of the Premiums and Representations Act.
  • Supported HYPER to organize the Special Investigation Committee to investigate accounting frauds including a possible overstatement of revenues found in the process of finalizing the financial statements of FY2021.

Mori Hamada & Matsumoto

Mori Hamada & Matsumoto has a long history of expertise across crisis management and investigations, with a significant history of advising major domestic and international clients across the full range of matters. Areas of strength include unfair competition, insider trading, accounting irregularities, and bribery and corruption. Yasuhiko Fujitsu, whose focus is capital markets related matters such as insider trading and market manipulations, co-leads the department alongside cross-border risk management and investigation expert Hideaki Umetsu. Also co-leading is Hiroshi Yamauchi, who handles risk management and dispute resolution, with particular expertise in external and internal investigations and criminal matters. Hiromasa Arai and Suguru Miyata are also noted.

Practice head(s):

Yasuhiko Fujitsu; Hideaki Umetsu; Hiroshi Yamauchi

Other key lawyers:

Suguru Miyata; Jiro Kiyama; Hiromasa Arai


‘Hiroshi Yamauchi of Mori Hamada & Matsumoto has global experience on compliance issues and is skilled at leading the team members.’

‘Quick and accurate advice, especially Mr. Yamauchi.’

‘Mori Hamada & Matsumoto is most sophisticated and strong legal team regarding the investigation for the allegation of inappropriate accounting in Japan.’

‘Hideaki Umetsu; A great communicator and negotiator. He is excellent in explaining issues in Japan in a way understandable to non Japanese stake holders and let Japanese client reach feasible results by filling with the gaps between Japan and other countries.’

‘Hiroshi Yamauchi, a partner attorney at the MHM Crisis Management Practice Team, is probably the most experienced partner in the crisis management practice area, coordinating cases and giving the best legal advice to clients.’

‘Mr. Hiroshi Yamauchi, a partner, provides very practical and convincing advice in the area of crisis management with a quick response time. He also anticipates client needs and voluntarily provides useful information.’

‘Their responses are very quick and the quality provided from them is high.’

Key clients

Japan Display Inc.

Kansai Electric Power Co., Inc.

Kawasaki Heavy Industries, Ltd.

Joyson Safety Systems Japan Co., Ltd.

EduLab, Inc.

KYB Corporation

Work highlights

  • Assisted Joyson Safety Systems Japan Co., Ltd. in respect to a case of misconduct regarding the client’s products.
  • Assisted Kansai Electric Power Co., Inc. (Kepco) in respect to a widely publicised political corruption scandal involving its executives and employees and a former politician.
  • Assisted, as a member of a Special Investigation Committee, with the investigation of Kawasaki Heavy Industries, Ltd., regarding the discovery of potential data falsification of its subsidiary’s products.

Nagashima Ohno & Tsunematsu

Nagashima Ohno & Tsunematsu has particular strength in representing regulatory and complicance cases with cross-border elements, with an aptitude for investigations, crisis management, and litigation with international scope. The sizable team contains a diverse set of former judges, prosecutors, accountants, governement officials, and PR specialists, equipped for a broad range of situations. Takayoshi Tao leads the department, and has particular expertise in financial and securities regulations, accounting fraud, and third party investigations. Core team members include Daisuke Fukamizu, whose practice is concentrated on white-collar crime, regulatory compliance, and crisis management, senior counsel Hideaki Kobayashi, who is highly experienced in coporate crisis cases, and Ayumi Fukuhara, who specialises in representing clients facing cross-border investigations involving domestic and foreign regulatory authorities.

Practice head(s):

Takayoshi Tao

Other key lawyers:

Daisuke Fukamizu; Hideaki Kobayashi; Ayumi Fukuhara


‘The team in NO&T is outstanding because of its strong ability to produce a very practical solution based on the solid analysis over the situation.’

‘Their advice is very useful as it takes good balance between risk and practical needs of the client.’

‘They are very flexible and agile to handle the matter and it has a great value in the case of unexpected risk management/investigation related matters.’

‘NO&T’s corporate compliance practice group has one of the best lawyers who are dedicated to providing top-notch service to clients.’

‘They were very responsive to client’s needs.’

Key clients

Tokyo Electric Power Company Holdings, Inc.

Novartis Pharma


Kobe Steel, Ltd.


LINE Corporation

Hitachi Metals, Ltd.

The Institute of Applied Energy (IAE)

Mizuho Financial Group, Inc.

Toshiba Corporation

Nishimura & Asahi

Nishimura & Asahi handles a broad range of corporate crises, including investigations by government authorities, securities and financial fraud, white-collar crime, and foreign corrupt practices, as well as any other misconduct for which corporations may be held accountable. The department is able to handle responses to investigations, dealing with stock exchanges, responses to government and municipal offices, and communications with the media. Leading the team is Hiroshi Kimeda, whose focus is on corporate crisis management and litigation, with broad experience in corporate scandal cases. Also key are criminal investigations specialist Kei Umebayashi, Kaku Hirao, who has a history of matters involving foreign investigations and regulatory authorities, and Tomoyuki Numata, whose practice covers corporate crisis cases, as well as international cartels and unilateral anticompetitive conduct.

Practice head(s):

Hiroshi Kimeda

Other key lawyers:

Kaku Hirao; Kei Umebayashi; Tomoyuki Numata

Atsumi & Sakai

Atsumi & Sakai‘s team includes former public prosecutors, qualified CPAs, and criminal defense attorneys, and has strength in advising international clients due to its go-to team of foreign partners. Co-leading the department are Masahito Fukuda, who leads the white-collar crime team, Makoto Nakano, a former policy planning officer at the Consumer Affairs Agency who joined the firm in 2021, and Tetsuro Takeda, who was a public prosecutor prior to joining in 2020. Kohei Murakawa is also key, and specialises in domestic and international dispute resolution.

Practice head(s):

Makoto Nakano; Tetsuro Takeda; Masahito Fukuda

Other key lawyers:

Kohei Murakawa

Key clients

Japan Post Group

Takumino Holdings Co., Ltd.

Tosoh Corporation

Mediahouse Holdings Co., Ltd.

Miura & Partners

Miura & Partners fields an experienced team with a record of handling internal investigations and crisis management both within Japan and internationally. Takashi Kiuchi has expertise in financial regulations, and benefits from a history as a Financial Services Agency investigator. Ryoko Yamaguchi focuses on securities fraud investigations and tax cases, while Yuhei Sakao, who joined from Nagashima Ohno & Tsunematsu in 2021, covers compliance and risk management.


‘Lawyers from different disciplines formed a team and made a full commitment, resulting in overwhelming performance in quality and speed.’

‘They used different communication methods depending on the situation and followed up with care.’

Key clients

Mitsubishi Electric Corporation

Work highlights

  • Represented a member of the Governance Review Committee for Mitsubishi Electric Corporation.

Oh-Ebashi LPC & Partners

Oh-Ebashi LPC & Partners specialises in investigations on large scale accounting scandals and data falsifications. The department is co-led by Ko Matsui, who handles foreign direct investments and cross-border disputes, Norihiro Sekiguchi, whose focus is corporate governance and disputes, and Shingo Yamada, who has experience in a range of relevant matters, including product liability and corporate investigation.

Practice head(s):

Ko Matsui; Norihiro Sekiguchi; Shingo Yamada

Work highlights

  • Assisted in the outside investigation of Outsourcing Inc.