When did the term hentai become a global genre label for anime and manga pornography?
The term hentai became a global genre label in 1990 when a single post on an online bulletin board repurposed the word from its original academic context to describe explicit anime and manga. By 1995, the definition had evolved from a description of perversion to a specific genre of pornography, and by the turn of the millennium, hentai was the 41st most searched term on the internet. This shift occurred when American fans adopted the term from the rec.arts.anime forums to categorize content they encountered in Japanese visual novels and self-published doujinshi.