Yuna, from Final Fantasy X, is arguably one of the most popular female leads in the entire Final Fantasy universe of video games, movies and anime. She is one of the few characters to ever appear in more than one game, as each Final Fantasy story generally has little or no relation to the previous. Being quiet, loving, and yet, strong, it seems that the team at Square designed, in her, the perfect woman for fans of the genre. 3D hentai artists are far from blind to this fact, and make this clear by the number of hentai doujin works which feature Yuna in ways she has never been seen in the original fantasies.
The range of works featuring Yuna in full 3D hentai is quite amazing. Top doujin works approach the cinematic quality of the original, while some are less fortunate in what they were able to achieve. Still, being a popular character, efforts to pair her in hentai situations with other characters from the series, monsters or even tentacles, continue, and apparently, continually improve with the technology of 3D. Hentai works about Yuna may not have led to many top sellers, but she certainly seems to be a desirable character among fans, and she has staying power. This will likely lead to her continuing to appear in doujin works for some time.