Nagashima receives high evaluation in Nikkei’s “Reliable Law Firm” rankings and “Best Performing Lawyers” rankings 2025

In the 2025 “Corporate Legal & Tax Affairs and Lawyer Survey” published by Nikkei Inc., Nagashima Ohno & Tsunematsu was once again highly evaluated in the “Reliable Law Firm” rankings, as selected by companies.
 
 
Reliable Law Firm Rankings
 
Nagashima Ohno & Tsunematsu (2nd)
 
In addition, our lawyers were recognized in the Best Performing Lawyers rankings 2025 in the same Survey (both the ranking selected by companies and the overall ranking selected by both companies and lawyers), with our lawyers ranking 1st in 3 out of 5 practice areas in the ranking selected by companies.
 
Best Performing Lawyers Rankings (2025)
 
AI Governance
Keiji Tonomura (1st by companies; 1st overall)
Ryuhei Itaya (10th by companies; 18th overall)
 
Cross-border M&A
Ryo Okubo (1st by companies; 1st overall)
Kei Okubo (8th by companies)
Yasuhiro Kasahara (8th by companies)
Yuko Tamai (8th overall)
 
Compliance
Daisuke Fukamizu (1st by companies; 3rd overall)
Tomohiro Hen (5th by companies; 8th overall)
Ayumi Fukuhara (5th by companies; 10th overall)
 
Corporate
Yutaka Kuroda (7th by companies; 8th overall)
Yuko Tamai (14th by companies; 10th overall)
Tomohiko Iwasaki (18th overall)
 
Antitrust and Competition
Yoshitoshi Imoto (7th by companies; 7th overall)
Ryohei Tanaka (16th by companies)
Kaoru Hattori (10th overall)
 
These rankings were featured in the December 5 to 8, 2025, online edition and the December 8, 2025, morning edition of the Nikkei.