Kibyōshi
Kibyōshi (黄表紙; lit. 'yellow cover') is a genre of Japanese picture book (草双紙, kusazōshi) produced during the middle of the Edo period (1603–1867), from 1775 to the early 19th century, physically identifiable by their yellow-backed covers. Considered to be the first purely adult comic books in Japanese literature, a large picture spanned each page, with descriptive prose and dialogue filling the blank spaces in the image.