International Family Law regarding Divorce, 1980 Hague Child Abduction 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 half an hour consultation is 5,000 JPY plus the consumption tax.

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.


April, 2019

Attorney Mizuuchi made presentations regarding the
1980 Hague Child  Abduction Convention~Japanese   experience in the Hague Symposium and the             International Family Law Conference hosted by Miller de Toit Cloete and the University of Western Cape,     Cape Town, South Africa.                                          Most of the participants are South African judges,      attorneys, African judges, and attorneys. Some of the members of the permanent bureau of the HCCH        (Hague Conference on the Private International Law) made presentations and held workshops regarding     1980 Hague Child Abduction Convention, 1993 Hague Intercountry Adoptions, and 1996 Child Protection     Convention.   

March, 2019

Attorney Mizuuchi made a presentation with another  attorney in the Seminar on the 1980 Hague               Convention for Diplomatic Missions in Tokyo hosted   by the Ministry of Foreign Affairs of Japan(Central        Authority of the 1980 Hague Convention).

February, 2019

Attorney Mizuuchi made a presentation regarding      1980 Hague Child Abduction Convention~                  Japanese experience in IAFL Symposium in Sydney,    Australia. 

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,

Past topics

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