NOTE: The anime version differs slightly from the 4-koma. See the "Anime & 4-Koma Comparison" below.
An aspiring new artist who wanted to become the next big thing in the doujinshi scene, driven by her urge to reap massive profits. Her full name means "childhood friend" in English.
Despite her innocent looks, Tsuyuri is already a seasoned artist in the doujinshi scene and is infamous for doing largely sadistic doujins, often involving rape. The name of her doujin circle is Panty Revolution.
Justice is a popular doujin artist who often sells tens of thousands doujins at a single event, though he doesn't earn much money due to the high production cost and low selling price per doujin, affirming his views that the reader's enjoyment of his works are more important than profit. He's also a lolicon and doesn't seem to mind showing his open affections to Sora.
At the time of writing this entry, there isn't much information yet about Sora (in both anime and English-translated 4-koma), besides knowing that she had some form of relationship with Justice and might possibly be Justice's assistant (and girlfriend?).
Anime & 4-Koma Comparison:
In the 4-koma, Najimi was first introduced to the world of doujinshi while she was talking to Tsuyuri during school hours. The anime's version however, took place while Najimi was on a train with Tsuyuri who offered to pay her in return for her assistance in the Comic Market. The 4-koma also never mentioned anything about Najimi having worked in any previous jobs while the anime had mentioned that Najimi once worked in a convinience store.
Yet another 4-koma turned anime after Hidamari Sketch and Lucky Star (2007 = year of 4-koma animes?). If you enjoy Genshiken, you might probably dig this. Each episode is only around 15 minutes long. Spoon and Your-Mom is currently subbing this. Your-Mom's video quality is below average at best, while Spoon seems a tad slow, but the best one in terms of subtitle and video quality. None of the two fansub groups had karaoke subs for both the OP and ED so far.
YOU CAN FIND THE MANGA FOR DOUJIN WORK ON AMAZON
I-it's not like you're being encouraged to download it or anything.