The genres for this is more of school life and comedy. I particularly enjoyed chapters 1 - 15 for the comedy. Chapters 21 and 22 are about romance. IMO, this series is not very ecchi, in that most of the ecchi moments get mixed with comedy. Story:6 Seems like one-shots, but some chapters feature character pasts and development. The storyline within 1-15 and 21-22 are better than the rest of the chapters imo. Art:9 Great in the sense that there is much impact between the normal expressions of the people compared to the special moments when they are shocked etc. Could understand all panels and characters were drawnwith detail.

Character:5
Initially there was the development of personalities between the different kids, but the mangaka seemed to drop it halfway, so I was pretty confused later between the characters (who is who?), since they all acted pretty the same. Plus most of this series seem like one-shots with little relation to the other chapters so there seem to be no particular main character other than Satou.

Enjoyment:6
I liked 1-15 very much, 21-22 quite much and for the rest, disliked em.

Overall:6
Since the average number of pages is 10, it does not take much time to read em' all. However, since most of the chapters seem to be at the limit of 10 pages (not more not less), some chapters seem to be a little draggy and some a little rushed (since they are mostly one-shots).

Read it for the comedy. :D