She is the main protagonist of this novel. She is a cheerful and happy high school girl, who suffers from constant memory losses and as a result has to carry a notebook. She holds the title of Super High School Level Analyst (超高校級の「分析力」).
He is a student of Hope's Peak Academy who worked for the Student Council who were killed in the school's Tragedy. He now investigates the incident. He holds the title of Super High School Level Bodyguard (超高校級の「ボディーガード」).
He is a student of Hope's Peak Academy and also a member of Hope's Peak Academy's Student Council. He is the only survivor of the The Tragedy of Hope's Peak Academy. He holds the title of Super High School Level Student Council President (超高校級の「生徒会長」).
They are students from Hope's Peak Academy's Main Course. They participated in a killing game which was The Tragedy of Hope's Peak Academy, all the members were murdered one by one, with only Soshun and Izuru surviving the killing game.
It is the first novel released in the Danganronpa franchise.