International Family Law regarding Divorce, Hague Convention Cases, and Inheritance

303 Second Masaki Building, 2-4-5 Namiki, Kawaguchi City         Saitama Prefecture, 332-0034, Greater Tokyo Area                   Half an hour train ride from Central Tokyo

Office Hours 9:30~17:30
      on weekdays                                  Legal Consultation             weekdays and the weekend
(The prior appointment is required).    


Welcome to our Website

Our Office

Mimosa International Law Office practices all aspects of family law in Saitama Prefecture, Greater Tokyo Area, with particular specialism in international family law, divorce and financial settlement with an international dimension, international custody disputes, international adoptionHague Convention, and inheritance.

We represent clients in the courts in Japan.

We assist the court cases in foreign countries as well by drafting opinions regarding Japanese family law, and by making testimonies as an expert witness in the court procedures etc.

We also translate documents from English to Japanese, including contract documents written in English.


We always strive to find a way to reach as amicable a solution as possible.

We conduct a legal consultation in English via skype, or on the phone.


Ms. Makiko Mizuuchi, a female lawyer, is registered on the lists of English-speaking attorneys at the Embassies of Australia, Canada, the U.K. and the United States in Tokyo. She is also registered on the list of attorneys specializing in family law, divorce and custody issues at the Embassy of the United States. 

Ms.Mizuuchi is a Fellow of the International Academy of Family Lawyers (IAFL). IAFL is a worldwide association of practising lawyers who are recognised by their peers as the most experienced and skilled family law specialists in their respective countries

Ms. Mizuuchi is a member of the Hague Convention Working Group of the Japan Federation of Bar Associations (JFBA), and is registered for the JFBA Lawyer Referral Service regarding Hague Abduction Convention cases.

Practice Areas

Please feel free to contact us for assistance regarding the following kinds of legal matters in particular:

     ・Representation by counsel                      in petitions for the return of children     under the Hague Convention at the          family court (Tokyo and Osaka), the high courts (Tokyo and                  Osaka), and the Supreme Court.

     ・Representation by counsel in international adoption cases in the            courts in Japan

      ・Assisting the Hague Convention outgoing cases in foreign courts 

      ・Assisting divorce, or child relocation cases in foreign countries

        ※We assist the family law cases overseas by cooperating with the    attorneys overseas,  writing the opinions regarding the family    law practice in Japan in order to submit to the foreign court, and           making testimonies as an expert witness in the foreign Court etc.

     ・Fair and equitable division of matrimonial property

     ・Effective legal representation by counsel in divorce proceedings in     the Family Court to ensure a better, amicable solution

   ・Representation by counsel for visitation conciliation proceedings in     the Family Court

     ・Assistance with deceased estates (division of inherited property)

   ・Drafting and execution of wills

     ・Translating documents from English to Japanese, including                    contract documents written in English

・Drafting documents including contract documents written in                   English


Covering areas

Representation in the courts in all over Japan is possible.

The locationos of the courts are such as,

Tokyo (Tokyo,Tachikawa), Saitama (Saitama,Kumagaya)Chiba (Kashiwa,Chiba), 
Ibaraki (Mito), Gunma (Takasaki,Maebashi), Tochigi (Utsunomiya), Kanagawa (Yokohama,Yokosuka), Shizuoka, 
Nagano, the whole Kanto region, and other cities in other regions (SendaiOsakaNagoyaKyotoKobeSapporoOkinawa etc.). 


※The family courts in the major cities introduced a telephone                   conference, and the telephone conference is available as long as the       court allows and the attoreny acts for a party.

Please note the telephone conference may not be allowed in all of the sessions.

Consultation fees


The fee for one hour consultation is 10,800 JPY.

The consumption tax is included.

Consultation in English is available.                                                                                                         


You are more than welcome to call us from all over the world (81+48-271-5085), or to send us your message from the Inquiry Form.

Inquiry Form

We look forward to serving you in a relaxed atmosphere.       Consultation by telephone, or via Skype is also available.


December, 2018

Our  office is closed from Dec.29, 2018 to Jan. 6,   2019 for the New Year holidays.

August, 2018

The office is closed from August 13 to 17 for the         summer break. Aplogies for the inconvenience.

May 29, 2018

Attorney Mizuuchi was a panelist regarding       enforcement  of Japanese divorce, child custody and child support        orders abroad in the symposium in Waseda University,    Tokyo hosted by IAFL       (International Academy of Family    lawyers).

May, 2018

Attorney Mizuuchi made a presentation regarding
relocation from Japanese law perspective in the
symposium hosted by the Law Society of Singapore,

February 2, 2018

Attorney Mizuuchi participated in the Family Law      Symposium held in the Canadian Embassy, Tokyo.

September, 2017

Ms.Alexandra Tribe, solicitor at Expatriate Law         Limited in London interviews Makiko Mazuuchi,       Attorney at Law from Mimosa International Law     Office. Expatriate Law Limited is a law firm located   in London which specialises in international divorce and family law, conducting divorces for expatriates   through the UK courts.                                         Makiko overviews of the family law that will apply in Japan in which expatriates live in the interview.       The interview is available by Podcast on the website as follows.               


Our office moved to a new place.  The new address is as follows.                                                               303 Second Masaki Building, 2-4-5 Namiki, Kawaguchi City, Saitama Prefecture, 332-0034, Greater Tokyo     Area         


The office is closed from August 11th to 20th for         summer holidays.


Attorney Mizuuchi participated in the U.S. and Canadian   Chapter meeting of the IAFL (International Academy of       Family Lawyers) in Nashville, Tennessee.


Attorney Mizuuchi made a lecture on the                  international family law in the Tochigi Bar               Association.


The testimonial page is added to our website.

September, 2016

The Family Law Conference was held in New Delhi,   India. Family law practitioners from Europe (the     U.K., France, Germany, Russia, etc), the U.S.,          Canada, Australia, Hong Kong, etc. attended the     conference, and exchange the opinions about the     various issues regarding the international family law. Attorney Mizuuchi attended the conference, and      discussed various family law issues, including Hague Convention, Domestic Violence, divorce, and the      same sex marriage.

July, 2016

Attorney Mizuuchi attended the family law conference  (Culture, Dispute Resolution, and the Modernized Family) in King's College London, London, U.K.

July, 2016

Attorney Mizuuchi attended the seminar with English
Hague Convention Specialists in London.

June 1st, 2016

Hague Child Abduction Convention became effective  in the Republic of the Phillipines.

May, 2016

Attorney Mizuuchi became a chair of the Guardian Center Management Council of the Kawguchi Social Welfare Chamber.

April, 2016

Attorney Mizuuchi participated in the Hague convention
conference in the American center in Tokyo hosted by
the U.S. Embassy, and exchanges information on the
international child abduction with Japanese practitioners
on the Hague cases, and diplomats in charge of
Hague cases in some embassies of the member states.

February, 2016

Attorney Mizuuchi participated in the IVLP
(International Visitor Leadership Program)
sponsored by the Department of the States of the
U.S. and visited 5 cities in the U.S. 
The theme of the program is 'IPCA International
Parental Child Abduction'. She visited some
government offices, courts, NGOs etc and had
meetings with judges, prosecutors, practitioners,
social workers, and experts on international child
abduction etc. 

January 27th, 2016

Attorney Mizuuchi was sent to the Tokushima Bar
Association by the Hague Convention Working Group of the 
JFBA and gave a lecture on Hague
Convention. It 
was a part of the activities of the
Hague Convention 
Working Group of the JFBA.

July 17th, 2015

Attorney Mizuuchi was sent to the Nagasaki Bar
Association by the Hague Convention Working Group of the JFBA and gave a lecture on Hague
Convention. It 
was a part of the activities of the
Hague Convention 
Working Group of the JFBA.

June 25th and 26th, 2015

Attorney Mizuuchi attended the Hague symposium,
"Towards the Well-Being of the Child Through the
Hague Child Abduction and Protection of Children
Conventions: An Asia Pacific Symposium, Macao,
China". The event is jointly sponsored by the Law
Reform and International Law Bureau of the Macao
SAR, the Department of Justice of the Hong Kong
SAR, and the Hague Conference. 

April 9th, 2015

Attorney Mizuuchi contributed an article on the        Hague symposium which was held in the IBA         (International Bar Association) Tokyo Annual            Conference, October, 2014, to 'International Family Law Journal Issue 1' published in U.K.

Key Features of the Office

1 Specializing in international divorce and inheritance

We specialize in family law matters, and have vast experience in handling both domestic and international divorce and inheritance cases, such as issues relating to the distribution of matrimonial property, compensation, child custody, visitation rights, and division of inherited assets which have an international element. We also represent left-behind parents who seek to visit or have contact with their children in Japan, and work with foreign counsel where appropriate.

2 Handling Hague Abduction Convention cases

We handle Hague Convention cases (international child abduction cases), and attorney Makiko Mizuuchi is registered for the JFBA Lawyer Referral Service in relation to such cases.

3 Finding amicable solutions with a reasonable cost. And when necessary, cooperating with foreign family law attorneys to settle the case. 

Family law issues are particularly sensitive because the persons involved are family members. In the long run, it is better for all concerned that the parties reach an amicable agreement promptly and without undue expense. We always strive to achieve this.

The international family cases involve the international elements. When necessary, we cooperate with foreign family law attorneys, such as attorneys from U.K., U.S., Canada, Australia, France, Sweden, Netherlands,and Switzerland to settle the case.

Areas of Practice

Strategies for             International Divorce

The Specialized Nature of International          Inheritance Cases

Criminal cases

More information

Areas of Practice

More information

Contact information

Please contact by telephone 


Office hours 9:30~17:30 on weekdays