Duolingo is not just a beneficial resource for those wanting to acquire a new language. It has also gained popularity among language aficionados. However, sadly, it seems that even this popular platform endures the controversial Rule 34 principle.
Numerous individuals found that Duolinger + 34th rule union are out there. It may come as a surprise, but apparently, there are fan-made illustrations based on characters of Duolingo that abide by the infamous rule that states "if it exists, there is porn of it."

Bea Duolingo Rule 34