Criminal Defence Lawyer in Japan – OMORI LAW OFFICE

We are lawyers based in Osaka, the centre of Kansai area, western Japan. We have English speaking lawyers with extensive experience in criminal defence.

People who are arrested in suspect of committing a crime, or prosecuted, could face serious problems without legal assistance, especially if it happens in a foreign country. Criminal defence lawyers who are able to communicate without the use of interpreters are not common in Japan yet. We deal mainly with litigation cases in Japan, especially with criminal cases. We advise and defend people who are involved in a criminal case in Japan, arrested by the police, or facing a criminal trial. We also provide advice and represent on potential scandals that are not yet criminal cases and settle disputes so that they will not develop to criminal cases.

In recent years, many Japanese lawyers are specializing into specific fields and lawyers with little litigation experience are increasing. However, a lawyer with a wider range of legal knowledge and more litigation experience can respond more flexibly to the case, not just doing the routine work. We would like to provide legal services of higher standards by utilizing our extensive legal knowledge as a generalist and our abundant litigation experience.

Needless to say, every case is different, and the circumstances and the needs of each client differ greatly. However, some large-scale law firms that advertise expertise tend to rely on manual-based routine work. We are committed to providing the best legal services that are tailored to the needs of each client.

Office information

Our office is located in Nishi-Temma, near the Osaka District Court and Osaka High Court. It is possible to come on foot from the centre of Osaka city, Umeda, Kita-Shinchi, Yodoyabashi, Minami-Morimachi.

For details, please see the access page of this website.


An English speaking lawyer is available, and consultations in English is possible.

If you would like to consult us, please call (06) 6131-1868 and ask for Omori, or contact us via the inquiry form on this website.

We work mainly on cases in the Kansai area(Osaka, Hyogo, Kyoto, Nara, Wakayama, Shiga), but please consult us for cases in other areas.


About the Lawyer

OMORI, Keiichi – Founder

DSC09452+I spent my childhood in the UK, and after returning to Japan, I studied law in Kyoto and passed the bar exams, and became a lawyer in Japan.

I started my career as a lawyer at Osaka Frontier Law Office (afterwards which became Osaka Public Law Office, one of the most famous law offices for criminal defence in Japan), the public law office established by the Osaka Bar Association, as a pro-bono lawyer and a public defender. There I mainly represented people who were facing financial or other difficulties and had difficulty to access legal services.

In 2007, I was attended as the first managing lawyer of the Nakamura Himawari-Fund Law Office, a public law office established by the Japan Federation of Bar Associations in the legally isolated area of Kochi Prefecture. There I dealt with a wide variety of legal disputes and acquired extensive experience in dispute resolution.

After completing the term of service at the Nakamura Himawari-Fund Law Office, I spent some time studying in the UK about the legal systems in the common law and the civil law countries. Returning to Japan, I was attended by the Japanese government in 2013, to research and plan the legal system, and draft the amendment bills for consumer damage redress and corporate compliance.

After the expiration of the term of service, I worked for a law firm specializing in international criminal cases.  Gaining deep expertise in criminal cases, and in cases involving clients from foreign countries, I joined Yasunaga Ichiro’s Law Office in 2017 as a partner.

Currently, I am dealing mainly in dispute resolution. I am especially focusing on criminal cases, from common cases such as illegal drug usage and traffic accidents to high profile serious crime cases in lay judge trials. I take cases from clients from foreign countries and are not familiar with the Japanese law system.


Graduated from Kyoto University, Faculty of Law(LLB)
Graduated from Legal Training and Research Institute of the Supreme Court


Osaka Bar Association Criminal Defense Committee
Osaka Bar Association Human Rights Committee
Osaka Bar Association Whistleblower Support Committee
Japan Bar Association Consumer Affairs Committee
Transparency Japan
Keiji-bengo Forum(Criminal Defenders Forum), etc.