Keiji Kato

Partner, Daini Tokyo Bar Association

Since his admission to the bar in 2013, he has been involved in consumer damage remedies such as fraud, inheritance disputes, real estate disputes, support services for politicians, and support for sexual minorities. Recently, frauds, starting with bank transfer scams, have become a social problem, and he has a great deal of experience in resolving consumer issues. He also regularly communicates with real estate agents and is familiar with real estate disputes and inheritance disputes.
He continues to support sexual minorities and serves as the executive director of the Tokyo Litigation Group for same-sex marriage cases. In addition, he has recently become involved in risk hedging and trouble support for politicians.

Education and Professional Background

2013:Registered as an attorney at law, belongs to a general law firm in Tokyo (Tama area)
2021:Transferred to a general law firm in Tokyo
2022:Joined the firm in October

Practice Areas

We handle a wide range of civil, domestic affairs, and criminal cases, with a particular emphasis on the following areas
Consumer law (remedies for consumer damage caused by fraud, investment damage, door-to-door sales, etc.)
◆Legal issues related to suicide
◆Support for sexual minorities
◆Legal affairs of local self-government
Public office election law
Political Funds Control Law
Legislator support
Real estate disputes
◆Inheritance disputes
Criminal defense in cases of drug crimes

Membership and Official Positions

Secretary for Policy Affairs for a Member of Parliament
Registered political fund auditor
Former Vice-Chairman of Consumer Affairs Committee, Tokyo San Bengoshikai
Secretary General of Tokyo Litigation Defense Lawyers for Freedom of Marriage for All (a.k.a. Same-Sex Marriage Litigation Defense Lawyers) (
Registered Support Expert for the Operation of the Guidelines for Debt Consolidation in the Event of Natural Disasters 
LGBT Support Lawyers Network 
Young Lawyers Association for Protecting Freedom of Tomorrow
Lawyers for Suicide Survivors (


Lecture on “Consumer Issues and Lawyers” at Kanto Gakuin University on May 12, 2014
LGBT Support Lawyers Network Publication Project, “Sexual Minority Q&A,” Kobundo, Japan, author and core member of the editorial team.
Same-sex Marriage Human Rights Relief Lawyers’ Association, “Same-sex Marriage: The Right to Marry Freely for Everyone”, Akashi Shoten, in charge of writing and editing.
Asahi Shimbun Publishing, “AERA,” May 16, 2016 issue, comments on Article 24 of the Constitution.
Keiji Kato, “On the Legal Theory of Non-Discrimination Concerning LGBT,” Houhou no Hiroba, July 2016
Keiji Kato and Shigenori Nakagawa, “LGBT and the Constitution,” BEYOND, October 2016
…Sunday Mainichi, October 1, 2017 Commentary published in Sunday Mainichi, October 1, 2017
∙ November 25, 2017 Report on the Annual Meeting of the Japan Society for AIDS Research, “Life and Legal Challenges of HIV-Positive People”
December 11, 2017 Tokyo San Bengoshikai Tama Branch Training
November 1, 2018 Lecture on “Considering Diverse Families” at Aichi Gakuin University
Keiji Kato, “LGBT Rights and Equality: Disadvantages and Countermeasures in the Workplace,” in “Diverse Sexuality Recognition in the Workplace and Society,” in Science of Labor, Vol. 71, No. 12.
January 28, 2020: “What to do when you are cheated? Lecture
Tokyo Shimbun, February 25, 2020 morning edition. Commented on the situation of accommodating foreign trans women.
Sekiguchi, Takeuchi, and Kaneko (eds.), “What to Do in Such Cases! 150 Questions and 150 Answers on Election Campaigning” (in Japanese), written in part.
Necessity of Legal Regulations Prohibiting Discrimination Against Sexual Minorities,” Monthly Human Rights Now, No. 397, April 2021.
Tokyo Shimbun, March 9, 2021 morning edition. Commentary in an editorial in the March 9, 2021 morning edition of the Tokyo Shimbun.


Sometimes we are asked the question, “What kind of lawyer is a good lawyer?” I am sometimes asked the question, “What kind of a good lawyer is a good lawyer? It goes without saying that “knowledge” is important, but I do not think that a lawyer should specialize only in legal knowledge. I want to be an “easy to talk to” lawyer who can work side by side with my clients.