Co-parenting Support Rimusubi 2026

Tokyo, Shibuya Ward

Rimusubi, a general incorporated association, is an organization dedicated to promoting and supporting shared parenting with the goal of creating “a society where children can continue to receive love from both parents even after their parents divorce.” In response to the current reality where parents and children are unable to meet in approximately 70% of divorced households, the organization provides Ministry of Justice-certified “ADR (Alternative Dispute Resolution)” for non-contentious divorce negotiations, as well as “parent-child interaction support” and “counseling” following divorce. We create spaces for dialogue that address the emotional conflicts between spouses while prioritizing the best interests of the child. Through a unique approach that integrates legal and psychological expertise, we provide multifaceted support to help parents continue raising their children together without conflict.

Co-parenting Support Rimusubi's Main Innovation
INNOVATION

A Supportive Divorce Mediation and Joint Custody System to Prevent Children from Being Drawn into Conflict Through Early Resolution

In this league, we are building and validating a "Supportive Co-parenting Platform" that enables parents—both before and after divorce—to smoothly reach agreements and remain actively involved in raising their children.
This platform is designed with three key features: ① an accessible "Online Mediation (ADR)" service fully functional on smartphones, ② a "Parental Communication Tool" for safe contact that helps avoid emotional conflicts, and ③ a "Parent-Child Interaction Support Management Tool" to streamline scheduling and coordination with third-party organizations. Our goal is to soften relationships hardened by conflict and create a framework where parents can resolve issues independently without relying on the judicial system. By combining on-the-ground expertise with our system, we will significantly reduce the burden of coordination and aim to establish a scalable social infrastructure.

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Co-parenting Support Rimusubi Representative Introduction
REPRESENTATIVE

Representative Satoko Shibahashi Satoko Shibahashi
Graduated from the Faculty of Law at Keio University. After working as a public relations secretary in the electric power industry, she founded the General Incorporated Association Rimusubi in 2017, inspired by her own painful experience with divorce. Drawing on her personal experience, she advocates for “joint parenting,” a model that allows parents to continue raising their children without conflict. She is the author of *The Practical Manual for Joint Parenting* and many other books. Through media appearances and lectures, she focuses on social reform aimed at protecting children’s happiness. She married at age 30, divorced at age 40, and remarried at age 50. Her hobbies include marathon running, mountain climbing, trail running, and gardening.
Main Achievements 2021: Testimony as an Expert Witness before the Family Law Subcommittee of the Legislative Council
2024: Testimony as an Expert Witness before the House of Representatives Committee on Justice
    Participation in the Ministry of Justice’s Research Project on Joint Parenting
2025: Selected for the Tokyo Metropolitan Government’s co-cial Studio Program
2026: Participation in the Ministry of Internal Affairs and Communications’ ICT Startup League
Motivation, Goals, and Ideal World This stems from my own painful experiences with divorce and raising children. I keenly felt the deep emotional trauma children suffer when they are caught in their parents’ conflicts. In Japan, as many as 70 percent of children in divorced families are unable to see the parent with whom they do not live. From my own experience, I realized that legal and procedural resolutions alone leave emotional resentment unresolved, leading to intensified conflict between parents and ultimately causing children to suffer. This made me strongly feel that a support system is needed to help families transition to joint custody without conflict, which led me to decide to start this business.
My goal is to spread a “dialogue-based resolution model (ADR/counseling)” nationwide—one that does not rely on litigation—to facilitate conflict-free divorces, thereby dramatically increasing the rate of joint custody agreements during divorce. I will establish an infrastructure that consistently provides emotional support and helps negotiate terms, building a system that allows those involved to feel a sense of security early on.
Beyond that, what I want to create is “a world where children continue to receive equal love from both parents even after divorce.” I aim to make it a common societal understanding that divorce is not the “breakup of a family” but rather the “reorganization of a team.” I will build a society where children’s rights and opportunities to be loved are never taken away due to adult conflicts, and a future where children can grow up with their heads held high, knowing that “I am loved by both my parents.”

Co-parenting Support Rimusubi Basic Informaton
BASIC
INFORMATION

Company Name Co-parenting Support Rimusubi
Representative Name Satoko Shibahashi
Address Kuwano Building 2F, 6-23-4 Jingumae, Shibuya-ku, Tokyo
Founding Date October 17, 2017
Awards August 2024: Received the President’s Award at the Japan Junior Chamber Value Design Contest
February 2026: Received the Social Contribution Award at the Forgood Awards 2025
March 2026: Received the Intrapreneur Award at NIKKEI THE PITCH

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