Masakatsu Nagashima is a Japanese attorney who joined TMI Associates in 2012. Since then, he has represented various entertainment and sports clients in Japan (including e-sports-related clients). He has a prominent knowledge and experience of e-sports and entertainment in both Japan and the United States. He was a speaker at the E-sports Bar Association Conference held in June 2019 in Los Angeles and published an article titled ‘The growth of e-sports in Japan - are domestic regulations holding back the industry?’ at LawInSports.