Age: 16 years old
Height: 170 cm
Weight: 63 kg
Weapons of Choice: Beretta M92F, Butterfly Knife,Desert Eagle, Scramasax Sword.
Known As: 'Quadra Kinji' (Quadra of Mimicry) - Vol. 6
Protagonist of the series and a student at Butei High school. He was ranked Level E (lowest combat rank) due to missing the Butei evaluation exam. However, under certain "conditions" his level raises to the highest combat status of Level S. He is currently enrolled in Inquesta department. After the death of his brother, he now plans on quitting Butei and live a normal life by transferring into a normal high school. His weapons of choice are Beretta M92F (which was illegally modified to fire a three-bullet burst. He refers to his own gun as Beretta Kinji Model), and a butterfly knife.
Later in Volume 6 of the light novel he adds a black Desert Eagle (which was also illegally modified to fire a triple burst as well as fire as an automatic) which belonged to his father and a double-edged scramasax sword (which was modified with a hidden sheath and a reinforced rubber handle) which belonged to Sherlock Holmes to his arsenal. Following the acquisition of Desert Eagle and Scramasax, he now dual wields weapon when in Hysteria Mode, rendering him as the third known Quadra in the series. (First shown in the decisive battle against Cao Cao triplets in Volume 7)