The so-called “monster girls” of Japanese anime and manga production, born in some of the sub-genres of the ero guro (a movement that combines grotesque, eroticism and nonsense), has been experiencing a global diffusion over the last few years, sometimes reaching the best-selling in manga product charts. A reflection on the change that these figures have undergone can introduce different concepts of “limit”: the crossed limit (typical of Japanese tradition) between human and non-human; the continuously negotiated limit between what is considered to be allowed or illicit; the tension to the limit (unreachable) of an explicit sexual intercourse, which these products alluded to but never realize, which also results in the limit between ecchi a...