Kazuo Kiriyama is a fictional character in the best-selling Battle Royale novel and manga by Koushun Takami. He can be viewed as the main antagonist in both versions. He is also a character in the film of the same name, played by Masanobu Ando.
Kazuo has AB-type blood.
The characters in Kazuo's given name mean "peace" and "male," respectively. The characters in his family name mean "tree" and "mountain."
In the novel and manga, it's implied that he is an illegitimately born child due to maternal infidelity. After killing his gang in the novel, he touches his left temple due to some elusive feeling he infrequently has. Kazuo states that since the doctor who operated on him died and, as he puts it, "his real father" dying of complication, he has no one to question about this.
