When people think of hentai, humor is rarely the first thing that comes to mind. The genre is globally recognized for its explicit, boundary-pushing adult content. Yet, a massive subculture of viewers frequently engages with it for reasons that have nothing to do with arousal. To put it bluntly: a lot of hentai is just plain funny.

Hentai repeats recognizable tropes (e.g., “accidental intimacy,” exaggerated misunderstandings, or fantastical creatures) so consistently that they can become predictable and therefore comedic. Repetition turns the shocking into the formulaic; what was intended to titillate becomes a running joke. Tropes treated earnestly by creators may be perceived as unintentionally funny by audiences who have seen the same setup dozens of times.