This year's March issue of Kodansha's Bessatsu Shōnen Magazine announced on Thursday that Sasako Mitomo's Danganronpa Gaiden: Killer Killer manga will end in two chapters. If there are no breaks, the manga will end in the May issue on April 8.

Mitomo launched the manga under the title Killer Killer last March, but the manga revealed with the third chapter in May that it was actually a spinoff of Spike Chunsoft's Danganronpa franchise, specifically the Danganronpa 3: The End of Hope's Peak High School anime. Only Mitomo was originally listed as creating the manga, but now Spike Chunsoft is credited for the original work, and Kazutaka Kodaka and Yōichirō Koizumi are listed as providing the scenario for the manga. The second compiled volume shipped on November 9.

The protagonists of the manga, Takumi Hijirihara and Misaki Asano, are members of the Future Foundation's 6th Branch's Special Case Bureau. Misaki works as the partner of Takumi, the sole survivor of the "Gibo'ura Middle School Large-Scale Massacre." However, Takumi does not hate the culprit. He loves all killing and killers in general, and even rates the grotesqueness of the very culprits he now apprehends as a detective. As of the manga's third chapter, Misaki had been kidnapped by former Hope's Peak Academy student and former Ultimate Fireworks-Maker Ted Chikachiro. In the vehicle where she is being held, Misaki is shocked to find the corpse of who appears to be Makoto Naegi.

The Danganronpa 3: The End of Hope's Peak High School anime had two arcs that ran simultaneously last summer. Danganronpa 3: The End of Hope's Peak High School: Future Arc was a sequel that focused on characters from the first original game, while Danganronpa 3: The End of Hope's Peak High School: Despair Arc was a prequel that focused on characters from the second game.