There are three holes in the X-ray there. And the author only uses one the most boring one (normal vaginal insertion) when the author actually can draw urethra insertion and anal? *sigh*. The most boring vanilla sex with nothing going on.
The author drew the (PIXIV) en/artworks/128446472 and en/artworks/128442823 > he could draw both the crossdresser guy's penis with full urethra insertion and his anus being ravaged too (all holes are used) while the female and reader enjoys full unobstructed both from his penis'hole and his anus being violated and humiliated. The link: https://e-hentai.org/g/3462446/f579932cc6/