The Fukurogi Incident was a notorious serial murder case where an active police officer named Nodoka Fukurogi killed 23 different murderers. After being tried and executed for these crimes, Nodoka mysteriously awakens in an unfamiliar situation. A mysterious girl named Lassey informs her that she has been resurrected to participate in a battle royale alongside other revived heinous criminals. Driven by her strong desire to prevent these murderers from committing further atrocities, Nodoka reluctantly throws herself into this twisted game with the goal of eliminating their kind from the world.

Some sources present the protagonist as Kazuki Kyoju, an active-duty police officer who killed 23 killers during the Kyoju Incident before being executed. After waking up following his death, a girl named Ressy explains he is now a participant in a battle royale of resurrected murderers. Determined to stop the atrocities of these revived criminals, Kyoju enters this dark survival game.

The setting is a contemporary world where a mysterious battle royale takes place involving murderers brought back from the dead. The main character is a former police officer turned vigilante executioner, now forced to fight alongside the very types of criminals she or he once eliminated. Lassey or Ressy serves as a mysterious guide figure who explains the rules of this deadly competition. The series began publication in 2023 and is an ongoing seinen manga that follows the protagonist as they battle against other resurrected serial killers in a fight for survival.