"The Seven Roles of Osome" - Osome no Nanayaku

...This is especially common in ghost stories, such as the quick costume changes between Oiwa and Kobotoke Kohei in "Tokaido Yotsuya Kaidan." Also, scripts such as "Osome no Shichiyaku" where the quick costume changes themselves are the main feature appeared. As a result of these influences, this style of direction was adopted and performed in plays such as "Chushingura," "Adachigahara," and "Momoyama."...

*Some of the terminology used in reference to "The Seven Roles of Osome" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…特に怪談物に多く，たとえば《東海道四谷怪談》におけるお岩と小仏小平の早替りなどがその例である。また，《お染の七役》のような，早替りそのものが眼目となる脚本も出現した。これらの影響で《忠臣蔵》《安達原》《妹背山》などにもこの演出を採り入れて演ずることが行われた。…

※「《お染の七役》」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報