18+ ( ADULT CONTENT) Hentai-Etymology:- The history of word "hentai" has its origins in science and psychology. By the middle of the Meiji-era, the term appeared in publications to describe unusual or abnormal traits, including paranormal abilities and psychological disorders. A translation of German sexologist Richard von Krafft-Ebing's text Psychopathia Sexualisoriginated the concept of "hentai seiyoku", as a "perverse or abnormal sexual desire". Though it was popularized outside psychology, as in the case of Mori Ōgai's 1909 novel Vita Sexualis. Continued interest in "hentai seiyoku", resulted in numerous journals and publications on sexual advice which circulated in the public, served to establish the sexual connotation of 'hentai' as perverse. Any perverse or abnormal act could be hentai, such as committing shinjū (love suicide). It was Nakamura Kokyo's journal Abnormal Psychology which started the popular sexology boom in Japan which would see the rise of other popular journals like Sexuality and Human Nature, Sex Research and Sex. Originally,Tanaka Kogaiwrote articles for Abnormal Psychology, but it would be Tanaka's own journal Modern Sexuality which would become one of the most popular sources of scholarly information about erotic and neurotic expression. Modern Sexuality was created to promote fetishism, S&M, and necrophiliaas a facet of modern life. The ero-guro movement and depiction of perverse, abnormal and often erotic undertones were a response to interest inhentai seiyoku. Following the end of World War II, Japan took a new interest in sexualization and public sexuality. Mark McLelland puts forth the observation that the term "hentai" found itself shortened to "H" and that the English pronunciation was " etchi", referring to lewdness and which did not carry the stronger connotation of abnormality or perversion. By the 1950s, the "hentai seiyoku" publications became their own genre and included fetish and homosexual topics. By the 1960s, the homosexual content was dropped in favor of subjects like sadomasochism and stories of lesbianism targeted to male readers. The late 1960s brought a sexual revolution which expanded and solidified the normalizing the terms identity in Japan that continues to exist today through publications such as Bessatsu Takarajima'sHentai-san ga ikuseries.