The content of Japanese animation (anime) is frequently edited by distributors, both for its release in Japan or during subsequent localizations. This happens for a variety for reasons, including translation, censorship, and remastering.
Under article 175 of the Penal Code of Japan, material containing indecent images are prohibited. However the laws date back to 1907 and were unchanged during the process of updating the Japanese constitution in 1947. Over time and due to changing tastes the acceptable standards have become blurred. The display of pubic hair was prohibited until 1991 leading to series such as Lolita Anime and Cream Lemon using the sexualisation of children as a loophole. The use of tentacles in series such as Urotsukidōji enabled the creators to avoid a ban on the display of genitals. In other cases, the content is self censored through the use of blurring and black dots. When the censorship is removed for overseas release, the basic animation underneath is revealed, leading to concerns over the sexualisation of children in those markets.
Cowboy Bebop and Gantz are examples of titles that received edited broadcasts and were later released as unedited home releases. Episodes of shows such as Mr Osomatsu have been edited for repeats and home releases.
Due to the lack of a formal and consistent age rating system in the United States of America age ratings for anime have created several problems. Blockbuster Video marked all anime titles as unsuitable for kids, leading them to appear as R-18 on their computer system. Publishers began using their own age rating suggestions on their releases, however due to differences between publisher assessments and the use of TV age ratings by some this resulted in an inconsistent system.
When Cartoon Network began to broadcast anime there were no internal standards in place for the use of overseas material. This required them to develop a set of standards and guidelines for the handling of the content. The display of alcohol consumption, gambling, blood, offensive language and the mistreatment of minors were all deemed unacceptable as well as other situations unsuitable to a younger audience. Material for Cartoon Network was edited for TV-Y7, whereas Adult Swim content was edited for TV-14 standards. However some content that aired on Adult Swim was originally scheduled to air on Toonami and was edited accordingly. Autodesk Inferno was used to digitally edit scenes to remove blood or cover up nudity on content edited by Cartoon Network. In some cases content was edited before it was given to Cartoon Network. The editing practices evolved over time due to complaints from parents.