離婚後の共同親権選択、4月から　子の利益確保、父母で養育（共同通信） - Yahoo!ニュース

This page reports that from April 1, 2024, Japan's revised Civil Law allows divorced parents to choose joint custody of their children. This marks the first revision to the custody system since 1947, aiming to ensure children's welfare by allowing both parents to remain involved in parenting after divorce. Parents can choose between joint and sole custody through agreement at divorce; courts decide in disputed cases or litigation. Sole custody is mandated when domestic violence or abuse is suspected. Joint custody allows single-parent decisions for daily matters and emergencies.