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As such, it is considered to be incomplete regarding the information available.
The article below is based on non-localized content only available in Japanese.
As such, all information in this article is based on fan-contributed translations.
Sting Casino Murders (スティング・カジノ・マーダーズ) is the fourth chapter of the manga Danganronpa Gaiden: Killer Killer. Chapter 4 was published in Bessatsu Shōnen Magazine on June 9, 2016, and later re-published in Danganronpa Gaiden: Killer Killer Volume 2 on November 9, 2016.
The Killing Festival was first shown in Chapter 4 when Misaki Asano was kidnapped by Ted Chikatilo. She is brought into a room, and told by Ted to stay there quietly. That's where Misaki saw an announcement that welcomed everyone to an event called the "Killing Festival". Misaki thought this had something to do with a tournament where killers faced against each other to battle to the death, though it was known as an urban legend.
A match soon started with many people exploding like a firework created by the Super High School Level Pyrotechnist, Ted Chikatilo.
Soon after the match started, Ted threw the 'corpse' of Makoto Naegi that suddenly exploded into a firework. When the match started, Ted's rival was Takumi Hijirihara, who the crowd boos at. Misaki was shocked when she first saw Takumi in a place like this and starts to question to herself about the reason he was here. Soon after the match started Ted punched Takumi, causing him to spit up blood. After Takumi muttered that he can't calm down in large spaces, Ted took that as mocking him and pressed a button, where the ground under Takumi collapsed and he fell into a cannon. He calls Takumi Killer Killer, which confuses Misaki. Just as Ted was about to cause the cannon to go off, another explosion happened near the audience, which blew up much of the crowd sitting there. As their body parts and blood rained down, another Ted Chikatilo stepped out. Misaki was confused and wondered why there were 2 Teds. Soon after that, the first Ted revealed himself as Juzo Sakakura, the Super High School Level boxer and the Future Foundation's 6th branch head.