What is X-Ray?

X-ray is a distinctive hentai visual technique showing a cross-section view through a character's body to depict internal anatomy during sexual acts. It appears as an overlay or cutaway panel revealing what is happening beneath the skin — typically showing cervix contact or other internal details. The technique originated in Japanese hentai manga and has become one of the most recognized stylistic signatures of the medium. It exists nowhere in live-action content (by definition) and rarely in Western adult animation, making it a uniquely anime/manga element. X-ray panels in doujinshi and animated sequences in studio hentai are consistently among the most discussed visual elements in community reviews. The technique has become so associated with hentai specifically that it reads as a genre marker — viewers who see x-ray content immediately identify it as Japanese animated adult content. In community discussions, x-ray is often cited as an example of how hentai can depict things live-action simply cannot, which contributes to the animated medium's distinct appeal. On iku.gg, the x-ray and cross_section tags surface content that features this iconic stylistic element prominently.