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.
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Accolades
Client satisfaction: Billing & efficiency
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.
Practice head
Hironori Matsumiya
Other key lawyers
Tomoyoshi Ina; Hiroyuki Masuda; Kurita Tetsou