Nyoro~n Churuya-san is doujinshi artist Eretto's first collected volume of his mega-popular webcomic parodying The Melancholy of Haruhi Suzumiya. It went from being a webcomic on his homepage, through several best-selling doujinshi volumes, and all the way to an official anime series released on Youtube and a commerical release of the comic.
More of the webcomic strips can be found on the iitran image board thread about it.