Moyashimon has always had a severe predilection for textbookitis. With the main character able to see bacteria, it stands to reason the thing has to explain what the bacteria are; with everyone students at an agricultural college it stands to reason their lives revolve around the research they're involved with. The plot generally proves strong enough to bolster it past the occasional onslaught of exposition.
Not so much in volume 7. While there were a number of fascinating passages on the process involved in making staple ingredients of Japanese food, and a long lecture on how sake shops really ought to conduct themselves that managed to be compelling reading in spite of itself, there was literally no plot for the bulk of the volume. A character from an earlier volume showed up literally to get drunk and have some light background gender confusion comedy, and there was some business about secret doors that seemed to defeat the author's considerable artistic abilities entirely, and basically spend a hundred pages or so with characters staring in shock at something poorly defined for reasons even less poorly defined, and I pretty much had to page back through the lectures to put all the puzzle pieces together once he got around to answering them.
I strongly suspect that the kind of fashions he likes to draw girls in lining up a lot with the kind of fashions I enjoy seeing girls drawn in was a significant reason why I still found it a largely pleasant read. This is a shame, and Moyashimon should probably aspire to something better. Restore the balance it maintained successfully for the first six volumes, anyway.
I don't think the English version has started coming out yet, so I suspect people aren't aware just how oddball the format of this book is. Manga in serialization tend to get the frames plastered with helpful little pictures of the characters and brief bits of text explaining who they are - a vague attempt at making it possible to pick up and read a chapter of something in the middle. They also tend to have cheery little slogans plastered on the sides or over certain frames, commenting on the action. Snarkily for quirky comedies like this, with demented enthusiasm for jovian adventures. For reasons known only to the author - wait, I can't keep writing this because I'm too lazy to look up his god damn name. Ishikawa Masayuki. Right. Too generic to be anything but his given name. Anyway. Ishikawa apparently does all those character profiles and random commentary himself, and they are all preserved in the final collected volumes. A shocking panel might have "Good god!" written next to it; the character introductions tend to be less useful as such and more ongoing metacommentary on the work. "The main character, though you'd never guess." "Gosh, she's drunk a lot." "Male." He also tends to grab the images from the least identifiable places possible - shots of them from behind, or in silhouette. And then he might chose to spend an entire chapter simply introducing the bacteria floating around the corners of the frame. They certainly aren't essential reading, but they tend to provide a chuckle when the main pages have started to bore me.