Web Novel

Death March to the Parallel World Rhapsody (デスマーチからはじまる異世界狂想曲, Desu Māchi Kara Hajimaru Isekai Kyōsōkyoku) is a Web Novel written by Hiro Ainana at user-generated content site Shōsetsuka ni Narō in 2013. It was later adapted into a light novel in 2014, inspiration for the manga and then anime.

Original works can be found at syosetu, it released every Sunday JST. After that the unofficial english translation will be started and the finished translation can be found at sousetsuka blog.