Hello,
I'd like to propose we add two tags to distinguish invest subtypes; Casual Incest - wherein the characters are related however the sex between them is depicted in a normalised manner as if it was between any two unrelated characters. And a tag to serve as a counterpoint: taboo incest where the characters having sex are aware of or remark upon the culturally forbidden nature of the act or that is otherwise a major theme present.

The dividing factor should be the participants reaction not that of a third party, i.e. with scenarios occuring in public, onlookers shocked reaction should be ignored. Especially as it would be difficult to distinguish between that and the reaction to normal public sex.

Let me know your thoughts.