The 'extremely dedicated' competition and antitrust team at Anderson Mori & Tomotsune frequently advises on international cartel investigations, merger control transactions, and the antitrust aspects of acquisitions. Shigeyoshi Ezaki leads the team and is well-versed in antimonopoly law. Yusuke Nakano is adept at advising clients on antitrust cases involving multiple jurisdictions. The 'top notch' Vassili Moussis is particularly skilled in handling EU and international competition cases. Hideto Ishida has broad expertise in advising on matters relating to cooperation agreements, and Atsushi Yamada, who is praised by clients for his 'superb knowledge and mastery' of Japanese antitrust law, regularly advises on merger filings and contesting decisions made by competition authorities.

Mori Hamada & Matsumoto's practice is rated by clients for being the 'gold-standard' for its handling of competition and antitrust cases. With considerable experience in multi-jurisdictional matters, the team is well placed to advise on international investigations, cross-border mergers, and abuse of dominance cases. Kenji Ito and Hideki Utsunomiya jointly lead the practice, specialising in antitrust counselling and antitrust policy issues respectively, with Utsunomiya regularly advising the government. Aruto Kagami is key for cartel investigations, while Yusuke Takamiya is proficient in providing compliance advice surrounding competition and antitrust matters. Of Counsel Saori Takekoshi is a name to note for cases in the IT and digital markets, while Tomoya Fujita is well placed to advise on the antitrust aspects of M&A mandates.

Nagashima Ohno & Tsunematsu's antitrust department is lauded by clients for its 'top notch' work and 'unrivalled quality', as well as its 'impressive ability' when assisting its Japanese clients with all manner of competition and antitrust cases. Practice head Yoshitoshi Imoto in particular is described as 'fantastic' when advising on government antitrust investigations, and also brings expertise in high-profile mergers and general compliance matters. Kaoru Hattori, described as a 'leading light', is a name to note for complex cartel cases and issues relating to contractual alliances and transactions, while the 'very strong' Ryohei Tanaka is recommended for his knowledge of merger filing requirements and antitrust issues relating to M&A. Yusuke Kaeriyama and Nobuaki Ito are also key contacts within the team.

Nishimura & Asahi's market-leading competition and antitrust team is particularly experienced in acting in major domestic merger cases, in addition to managing negotiations with the Japan Fair Trade Commission. Practice head Kozo Kawai bolsters the team with his longstanding experience and strong skills in international trade matters. Other key team members include Madoka Shimada, who is proficient in advising on bid-rigging, leniency applications, and handling large deals in the IT industry. Kojiro Fujii is the name to note for private monopolisations, and cases involving unfair trade practices or abuse of superior bargaining positions. Junko Wakabayashi , Nobuhiro Tanaka, and Kazumaro Kobayashi are other key contacts within the practice.

The team at Atsumi & Sakai, which is headed by the 'highly qualified' Saori Hanada , handles a vast range of international matters,  including private enforcement in foreign jurisdictions, internal audits, merger control cases, and international cartel cases. Other work the practice undertakes includes risk management advice, investigations by authorities, and advice on vertical restraints. Masayuki Matsuura is a key contact for merger cases, while the 'outstanding' Tatsuo Yamashima is a name to note for cartel investigations. Setsuko Yufu is recommended for her deep knowledge of cartels, bid rigging, and leniency.

Oh-Ebashi LPC & Partners' competition and antitrust team displays vast knowledge of government investigations, with practice co-heads Tetsuya Nagasawa, Takashi Ishii, and Kagenori Sako possessing extensive experience working within the Japan Fair Trade Commission. The team is proficient in handling merger control mandates, disputes concerning consumer protection and competition, and advice on regulatory compliance.  Yuichi Oda, Kosuke Yoshimura and Mizuki Kanno are noted for their broad expertise in assisting clients with cartel cases.

TMI Associates is commended for its ability to provide on cases involving cartel investigations, cross-border matters, merger notifications, and joint ventures. The team of 'thoughtful, good communicators' is jointly headed from Tokyo by Harumichi Uchida, Yohsuke Higuchi, Koichiro Hanamoto, Yukio Kaiju, Daigo Fujii, and Kentaro Toda, who collectively have broad in advising on dealings with the Japan Fair Trade Commission, M&A transactions, and cartels. Recent work has seen the team advise in an international arbitration case involving EU competition law, in addition to the submission of notifications to domestic and foreign competition authorities.

City-Yuwa Partners' practice is particularly skilled in advising on mergers and violations of the Subcontract Act and Unjustifiable Premiums Act, with practice c0-head Yoshihiro Sakano regularly representing clients before the Japan Fair Trade Commission. Fellow co-head Teruhisa Ishii is adept at advising both domestic and international clients on the competition and antitrust aspects of M&A.

The group at Miura & Partners has expansive experience in an array of competition matters, including merger control filings, investigations by the Japan Fair Trade Commission, and global competition law compliance. Practice head Masayuki Atsumi is particularly well-versed in cross-border mandates involving the US Federal Trade Commission. Associate Haruka Otaki is a key contact for antitrust cases involving Chinese law.