Danganronpa Series

Danganronpa is a series of Peaker fanfiction written by an individual who went by Littlewings99 on public forums. These works followed a basic formula: Littlewings would choose a class from the Seiberg Institute, and using only the names, talents, and physical appearances of the class members, they would create a multi-part fictional piece in which the class members become characters who are trapped inside their school with a mandate to kill each other. Over time, the formula has become more complicated, with the introduction of Class Trials, a more restrictive set of rules for characters to follow, and a consistent six-part structure. Each piece ends with at least two survivors, with a maximum of eight survivors, and a 'mastermind reveal', in which the individual responsible for the students' imprisonment reveals themself.

History
The first Danganronpa story published appeared in the "Fanfiction" forum on peakersnet.com, a popular message board for Seiberg Institute enthusiasts. It was published by Littlewings99, a formerly active user across various online Peaker communities. In this original post, the piece was titled Dangan Ronpa, but the writer later condensed the title into a single word.

The original post, which is no longer online, came with a forward by the writer:

The premise for this story comes from the 2000 Japanese movie Battle Royale, in which a class of high school students are forced to kill each other in a twisted reality show enjoyed and kept secret by adults. However, anyone familiar with the film will quickly recognize some of the differences between this story and BR. I like to consider that I'm paying homage to the movie without completely ripping it off. The name "Dangan Ronpa" comes from the Japanese words 弾丸 (dangan, meaning bullet, shot, or bullet mark) and 論破 (ronpa, lit. refutation, in most cases meaning a winning argument in opposition to another).