"Brace yourselves! You rule-breakers!"

Shiromi Iori is one of he students studying at Gahenna Academy, who wields a Sniper Rifle.

A 2nd year student and a cold-blooded specialist of the feared Prefect Team. As the field captain of its assault corps, she immediately punishes students who violate the rules with overwhelming force whenever and wherever she finds them. While she may be efficient and formidable in combat, she is also reckless and stubborn, and is prone to losing sight of her surroundings once she spots an enemy, which makes it easy for her to fall for even obvious traps.