Danganronpa 2: Goodbye Despair (manga)

Super Dangan Ronpa 2 - Sayonara Zetsubou Gakuen (スーパーダンガンロンパ2 さよなら絶望学園 コミック) is a manga from Famitsu Clear Comics. (ファミ通クリアコミックス)

Though this might seem the most impopulair or unknown one, its the only manga which follows the game story mode as much as they can.

Volume 1 is released on 2013/11/15 and Volume 2 on 2015/2/14. Source: http://www.famitsu.com/comic_clear/se_danganronpa2/