Ishihara (石原) (voiced by: Kōji Ishii) is one of the Shonan Special Disciplinary School's senior guards. Ishihara is a brutal and sadistic man who enjoys beating and punishing students for the slightest of reasons. Of all the students, he has the greatest grudge against Sakuragi, who shows no fear of Ishihara and does not fall for his schemes. This caused Ishihara to be afraid of Sakuragi, especially when he stared at him, which drove him to kill.[who?] Ishihara neither cares for nor respects any students or guards at the school. with the exception of Dr. Sasaki, who gives him the drugs that he is after and pays him so that he can violate the boys. After leaving the Reformatory and the killing of Sakuragi, he is seen on the coast, in a very poor and emaciated state. After being confronted by Mario, he is left at Mario's mercy, given Ishihara's now miserable life.