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.

DISCLAIMER: Danganronpa, its characters, Kibougamine Academy, and this story do NOT belong to me - they belong to Spike Chunsoft. I also was not the one to translate this from Japanese to English; credit goes out to whoever did. The story revolves around an amnesiac girl named Ryōko Otonashi who is a student at Hope's Peak Academy, and the sharp-tongued Ultimate Neurologist Yasuke Matsuda, with whom she is infatuated. A month after The Tragedy of Hope's Peak Academy, the school is full of unrest and secrets, with many people attempting to find out what truly happened and who is to blame. Despite not wanting any of it, Ryōko is connected to the incident and soon gets caught up in its aftermath, learning more and more about what happened.

DISCLAIMER: Danganronpa, its characters, Kibougamine Academy, and this story do NOT belong to me - they belong to Spike Chunsoft. I also was not the one to translate this from Japanese to English; credit goes out to whoever did. The story revolves around an amnesiac girl named Ryōko Otonashi who is a student at Hope's Peak Academy, and the sharp-tongued Ultimate Neurologist Yasuke Matsuda, with whom she is infatuated. A month after The Tragedy of Hope's Peak Academy, the school is full of unrest and secrets, with many people attempting to find out what truly happened and who is to blame. Despite not wanting any of it, Ryōko is connected to the incident and soon gets caught up in its aftermath, learning more and more about what happened.