It would be a shame if the anime were never continued, since I'm sure the rest of the series could be covered in a 1cour anime season. Still, there are a lot of anime adaptations of manga and light novel series that only adapt a small portion of the work.
OK, damnit. I just finished Season 2, and I demand to know who turned off the Doujinshi spigot on this show. Seriously, I am so jonesin' for some SumiKeke manga. Christ, don't make me resort to actually reading fanfic.