If you liked Dramacon, you will love this series as well. This is also about conventions, with the main character being an up-and-coming doujinka (doujinshi artist/author). We get to go along with him on his journey as he teams up with other doujinka to both become better at his career and to save ComiPa.
I wish I had the last book - Vol.5 - but, I don't. I feel like that one probably has a climax for Kazuki vs. Eimi.
For half of this book we have that stupid terrorist/bomb plot. :| Luckily, the other half picks up again with cosplay (I loved what Mizuki did and how she even went so far to complete her outfit). I really loved reading it, and it was fun how happy that new character and Taishi were when they converted a normal (aka Mizuki). All in all, a pretty OK volume, and it also included some more romantic times between Kazuki and Mizuki (though Mizuki really needs to lay down that bat). :P