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Corporate and M&A: Independent local firms

One Asia Lawyers

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Ushijima & Partners
Kojima Law Offices
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Tokyo International Law Office
One Asia Lawyers is recognised for its complex cross-border M&A practice, often advising clients in the tech, healthcare, and fintech sectors on shareholder realignments, distressed M&A, and earn-out renegotiations. Hironori Matsumiya leads the team with expertise across the entire M&A transaction process, from initial structuring and due diligence to negotiation, signing, and post-closing integration. Tomoyoshi Ina is recognised for his skill in uncovering and mitigating hidden deal risks, structuring transactions to meet regulatory requirements, and navigating cross-border commercial and cultural differences. Hiroyuki Masuda focuses on clients in the education and life sciences sectors, where he advises on complex, multi-jurisdictional M&A transactions.
Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘One Asia Lawyers is an excellent support for Japanese companies in their overseas offices: they understand the Japanese business practices and legal system, and can provide accurate advice on overseas laws and regulations and those of multinational companies.’

  • ‘Hiroyuki Masuda is always quick and precise in his advice on mergers and acquisitions. In particular, he explains in detail the risks and points to bear in mind when a Japanese company acquires a foreign company. He is also tenacious in negotiating agreements with the acquisition target, which is very reassuring.’

Key clients

  • ELAN Corporation
  • Hibino Corporation

Work highlights

Advised Adventure Inc., a leading Japanese online travel agency, on its acquisition of 100% of the shares in UR Communications PTE. LTD, a Singapore-based travel services company.