Kenji Sakurayama is the major of the National Defense Force stationed at Yamatoyama City.
Sakurayama is a tall, stern-faced man with light-colored hair that reaches to the nape of his neck. He also sports a thin, dark-colored beard, with slight sideburns. His usual attire is a dark-colored, long-sleeved military uniform, which features two large envelope-shaped pockets on either side of his chest; his uniform's top is unbuttoned slightly at the neck, revealing a dark-colored shirt underneath this. His pants are a similarly dark shade, held up by a thick, dark-colored belt. On his feet, he appears to wear a pair of boots.
- (To Teppei Ushizume) "...In the army, units tasked with missions of defense often adhere to the chivalric code of "knights". Since you're going to protect people, that makes you a knight! Go! Iron Knight!"