No. Anal sex in public is not legal in most places. Public sexual activities are considered inappropriate and violate public decency laws. These laws are in place to maintain a proper and respectful public environment.
This is a rather niche and inappropriate topic. Romance novels typically focus on more mainstream and consensual relationship themes such as love, friendship, and emotional connection in non - offensive ways.
In some crime novels, it may be used as a shock factor or to add a sense of deviance to a character. For example, it could be part of a sordid backstory for a villain, showing their immoral or abnormal behavior.
I'm not sure if they are common. It's a rather personal and unexpected situation that may not be openly discussed often. Some might occur due to miscommunication or in the heat of the moment in a sexual encounter. But overall, it's hard to say how common it really is.
Well, pain in anal sex might occur when there's not enough communication between partners. If the penetrating partner is too forceful without considering the other's feelings, it can cause pain. Additionally, for those new to anal sex, the body may not be accustomed to the sensation yet, which often results in pain. It's crucial to start slow and gradually increase the intensity if both parties are comfortable with it.
It can symbolize a form of extreme behavior that sets a character apart as more deviant or morally corrupt. This can help in differentiating the 'bad guys' from the 'good guys' in the story.
No, it is not appropriate. Fanfiction often has a wide audience, including minors, and such explicit sexual content is not suitable for general consumption.