Duolingo isn't only a beneficial tool for those interested in learn a new language. It has also become popular with language hobbyists. However, regrettably, it seems that even this popular platform endures the controversial Rule 34 dictate.
Many have found that Duolingual + rule 34 combo exist out there. It might come as a surprise, but evidently, there are user-generated artwork based on characters from Duolingo which adhere to the infamous rule stating that "if it exists, there is porn of it."