A legal separation is a court-supervised arrangement that allows couples to live separate lives. This is usually by living apart. The court directs financial obligations, child visitation, and child support.Islamic countries, such as Brunei, prefer divorce to separation. Divorce is frowned upon by the religious system. Separation procedures are often similar to separation procedures.In Korea, the law focuses on separation. The law governing separation is a minor version of the separation law. In Japan, separation is not allowed. However, nullifying marriage is provided for in law. Couples who want to separate must navigate the law to establish grounds for separation. This paper compares some aspects of separation between husband and wife in Korea, Japan, and Brunei. It provides instances of how couples in the mentioned countries have been able to use the law to separate. In an Islamic country such as Brunei, separation is preferred to divorce because divorce is frowned upon by the religious system. Separation destroys the normal flow of finance and financial management among families and may tamper with the everyday life of the affected.Separation is mainly treated as a step before the divorce. Therefore, most legal procedures attached to separation involve property division, financial obligations, child visitation, and child support. Consequently, separation procedures are often similar to separation procedures. In Korea, the law focuses on divorce. However, couples should create an agreement that outlines how they will support their children and how they will access them.The complexities and dynamics of marital relationships and families established through institutional marriage pose a significant challenge to family law. Despite the reforms in Korean Family Law, there still exist legal limitations and controversies which the law has not been able to address effectively.