The translation and novel is not mine. The author is Takekuni Kitayama and the illustrator is Rui Komatsuzaki. I found this translation in tumblr from Edogawa Translations. So copyrights to them

WARNING SPOILERS FOR THE GAME DANGANRONPA DanganRonpa IF an AU written by Ryogo Narita! This story was included as a bonus in Super DanganRonpa 2. Naturally, there are SPOILERS FOR THE ENTIRE GAME below. Seriously. Don't read it if you haven't played/read through the whole game, because it's got a wonderful story and cast, and it would be a shame to go into it with spoilers.