The fierce battle of the female body torture Research Institute and the Himekawa Soke continued. A new assassin appears there. Koya akizuki, who has been learning the secret art as a high-ranking person. Because the respected Yoshino saionji was tortured, he put great anger on his chest and confronted tsujimaru. Koya that is surpassed to kill. But never endure the words of courtesy. The ultimate battle.