A 6-people high school friend group Masaomi, Sho, Runa, Daichi, Hiyori, and Haruto gathered in a luxurious Western-style building after receiving an invitation from the alumni association. They were greeted by a man who seemed to be a butler in the mansion and were pleased to see him again, but no other attendees were found. When they were wondering, a flashy man who seemed to be the owner of the hall appeared, calling himself as a Game Master and told them: "I'm going to ask everyone to play the game. Can I call it "Murder Mystery"? Find out the criminal who killed Inoue Honoka." On December 3, five years ago, when six people gathered as an alumni association, it was the anniversary of their classmate Inoue Honoka's death when she jumped off the roof of the school. A suicide note was left behind, and as a result of a police investigation, she was determined to have committed suicide. But the Game Master says "Inoue Honoka was killed" and "there is a criminal among these six". (Source: PRTIMES)Edit Translation