>>4403042>>4403042It's basically a story that's supposed to have been based on real life, of an otaku who uses 2chan to hook up with a girl. It's a sweet story, and most anon on 4chan will get most of the references, puns, jokes and text lingo.
There was a live-action version of this, but the manga is the best place to start. Link related! :D
http://www.citymanga.com/densha_otoko/chapter-1/05-06/