Today, I will go over the 8 most controversial incest anime series to ever be released. From themes revolving around step-siblings and blood-related siblings, this list will definitely contain some of the most iconic incest anime series ever. Without further ado, let’s get to it! 8. Domestic na Kanojo. Incest is as old as the human race. In fact, the human population wouldn''t have thrived had people back then didn''t engage in incest. Today, incest is a top global taboo. An average person sees an incestuous relationship bestial, barbaric, and horrendous. Incest, in whatever form, is illegal in many first world countries. Interestingly, it isn''t a punishable offense in many Asian, African, and