加筆

Meanings

1. Noun, Suru verb, Transitive, Intransitive

   improvement (to a piece of writing or painting); revision; correction; touching up

• とある映画えいがを文庫化ぶんこかした—いや、映画えいがの為ために書かかれたシナリオを小説しょうせつとして加筆かひつ修正しゅうせいし、日本語にほんごにローカライズしたものだ。

  A certain movie was novelized - rather it was a scenario written for a movie that was expanded as a novel and localized to Japanese.