Densha Otoko: Gambare Doku Otoko電車男 がんばれ毒男!; Densha Otoko: Gambare Doku Otoko; Gambare Doku Otoko; Train Man: Go, Poison Man!

*manga is based on a true story and the true story was done in 2ch* It's about an Otaku guy who fell in love with this beautiful lady and tries his best to get that girl with a lot of help from 2channelers (people who goes/posts on 2ch). This story has become very famous in Japan and I believe they now have novels, several series of Manga (both Shoujo and Shounen), movie, drama, play, etc, etc.