Anyone who has ever seen some of the more extreme or, ahem, unusual entries in the pantheon of Japanese adult video will be aware of ryoujoku (or ryojoku).
It’s where the woman is treated in a “degraded” way, as someone violated or disgraced — like a shamed woman. (The actual meaning of ryoujoku can be sexual assault, i.e. rape, or also “disgrace”.)
A common scene in Japanese porn will have the girl treated like a “human toilet” and phrases written on her body to “shame” her.
Here is Mika Osawa demonstrating the genre.
The graffiti might say things like “¥200 for one use”, “pervert urinal”, “slut”, “penetration this way” and so on.
The Ryoujoku Stockings allow you to indulge in this power fantasy without the hard work of doing the writing.
All you need to do is slip these tights on and you are instantly transformed into a degraded woman, with the insulting text written on the skin-colored stockings.
So put your pens away but get your darkest fantasies out.