Shuuji Fujigawa: Killer killer, Hijirihara's childhood friend, wants to exterminate human race, because he realized anyone could be a murderer Takumi Hijirihara: Other killer killer, wants to end all murders by murdering the serial killers. Is mysteriously polite, hides in enclosed spaces at random times for comfort, habit of hugging the corpses Both survived the Giboura Middle School masacre Other characters: Juzo Sakakura, Kyosuke Munakata, Mekuru Katsuragi, Misaki Asano