Volume 7 is really weird. It seems like it was supposed to be a recap or a retelling, but it stops halfway through the plot and most of it are short monster-of-the-week stories. I guess it could be meant to show more of those "filler" chapters similiar to the bonus chapter in each of the previous volume... But in that case, why include any plot? And why end it on a cliffhanger?
Anyway. Volume 7 aside, it's a pretty average Sailor Moon-style story about magical girls, but with weddings. The art is nothing special, the plot is pretty dumb, and the translation is a mess. I read it because I wanted to know what's it about and it was faster than watching the anime, and halfway through I figured that since it's short and a pretty quick read, I may as well finish it.