Manga 122300 Tae-chan To Jimiko-san

It's yuri, it's hentai... what else to say about it? Well, most importantly: the emotional tone is consistent and real to the characters, which makes the sex following their dialogs that much more realistic and, to be blunt, hot. So what suffers is the plot. Oh, it's realistic enough... it's just insanely compressed to work many lifetimes of sexual encounters into a comic that proceeds "one chapter: one sex scene." It's so noticeable that by chapter 13 the author jokingly compares lesbianism to a contagious disease.

It sounds artificial and trite. And the plot structure, like "Phineas and Ferb," is intentionally limited to variations on a ... single plot dynamic (I won't spoil what it is). But instead of grating with repetition, the dynamic starts to amuse the reader: we see the plot machinery kick into gear and instead of crying, "oh, no!" we think, "here we go again!!" And since the emotional lives of the women are always treated sincerely and sensitively, it all works.