A word bubble is conveniently placed over the woman's genitals. Source: Belle Rose, vol. 3, November 1994.

...Commentators on ero manga often use this dissonance between the "unrealistic" depiction and real life to decry any resemblance between the two and to assert that manga are fantasies that no one believes and that have no impact on the behavior of real people. More to the point, perhaps, is the pounding repetitiousness of the attacks; power is so consistently sought on the pages of ero manga, yet is it ever achieved, or if so, is it ever sustained? Women are beaten time and time again into submission, but they always return, or if one woman is eliminated, another takes her place. Whatever it is these woman stand for, men and their phallicism are fairly powerless in its presence.