noun, noun or participle which takes 'suru', transitive verb
removal from family register
Legal term for having one's name removed from a family register (koseki), typically through marriage, adoption, or other family law procedures. Often used in the context of 離籍届 (notification of removal).
結婚に伴い、彼女は実家の戸籍から離籍した。
Upon marriage, she was removed from her parents' family register.
離
You need to submit a notification of removal from the family register to the municipal office.