Duolingo™ is more than just a beneficial tool for those wanting to pick up a new language. It has also captivated the interest of language aficionados. However, sadly, it seems that even this cherished platform endures the notorious Rule 34 principle.
Many have found that Duolingo ️ + Rule 34 union exist. It may come as a surprise, but evidently, there are indeed user-generated artwork based on figures from Duolingo that abide by the infamous guideline which states that "if it exists, there is porn of it."

Lily Duolingo +18 by RougeFlair on Newgrounds