noun
companion volume; sister volume; sequel
Refers to a book, film, or other work that is related to another as a companion piece or sequel. Often used in publishing and media contexts.
この小説は前作の姉妹編として書かれた。
This novel was written as a companion volume to the previous work.
映画の姉妹編が来年公開される予定だ。
A sister film is scheduled to be released next year.
姉妹品 is used for companion products or goods, whereas 姉妹編 is specifically for published or produced works.
Compound of 姉妹 (sisters) and 編 (volume, edition), literally 'sister volume'. The term is a straightforward modern coinage without a complex historical derivation.