If the parties cannot come to an agreement or if they cannot have consultation between the parties

チルドレン・ファースト
You may file a petition with the family court for conciliation or adjudication. In the case of adjudication, a ruling is often made to divide the marital property by one-half for each party, regardless of each partner’s employment status.

For an overview of the procedures for distribution of property in the court, click here (Court website) (Japanese only)