noun
second volume (of two); third volume (of three)
Used for the last volume in a two- or three-volume set. Contrasts with 上編 (first volume) and 中編 (middle volume).
この小説は上編と下編の二冊で完結する。
This novel is complete in two volumes: the first and the second.
三部作の下編が来月発売される。
The third volume of the trilogy will be released next month.
Compound of 下 (げ, 'lower, last') and 編 (へん, 'volume, part'). The reading げへん follows standard on'yomi.