A Major General of the Japanese Imperial Demon Army. Although he has a high capacity for spellcraft since childhood, Shinya is not comfortable with being with the Hiiragi Family. Shinya is shown to be a gentle and cool man. He does not get angry easily, even when being insulted by Seishirō.
He is seen smiling pleasantly all the time, even in tough spots. He has a lighthearted and breezy personality. Shinya is shown to be very loyal to his friends, such as Guren. He is also very observant and perceptive, and easily grasps Guren's emotions.
