SRT Special Academy, CAT Squad. Call sign: CAT-2. The point-man of CAT Squad. She is spirited and hates losing, but she is never reckless. She prioritizes standing at the front of dangerous locations and protecting her comrades above all else. Normally, she's a bit cheeky and enjoys joking around, but her expression changes instantly the moment a mission begins. Because she rushes in faster than anyone else, leaving only the words "Captain, I'm going in first," she is known within the squad as the "Black Cat."

SRT Special Academy, CAT Squad. Call sign: CAT-3. The mood-maker who brightens the atmosphere of CAT Squad. Always smiling, she is in charge of supply and the health management of all squad members. Even during combat, she calls out with a smile, "It's okay! We can still keep going!" but she hates seeing her comrades get hurt more than anyone. She possesses extensive medical knowledge, and her speed in providing first aid is the best in SRT. While she plays a support role on the battlefield, she has the courage to dive into the front lines if necessary.

SRT Special Academy, CAT Squad. Call sign: CAT-4. Reconnaissance specialist, reticent and possessed of excellent observation skills. She doesn't talk much in person, but she provides extremely precise reports over the comms. Her memory is so sharp that she can memorize building structures and enemy placements at a single glance, and her search capabilities are respected even by FOX Squad. She often looks sleepy while on standby, but once a mission starts, she displays more focus than anyone else. Skilled not only in sniping but also in drone operations and electronic reconnaissance, she is known as the "Eyes of CAT."

SRT Special Academy, CAT Squad. Call sign: CAT-1. Commanding Officer. Reina is a girl who remains constantly calm, rarely changing her expression even in the most dire emergencies. She hates any form of waste during missions and is the type to be thorough with preparations, prioritizing the safety of the entire unit above all else. On the other hand, she pays close attention to the physical and mental state of each squad member, possessing the kindness to quietly reach out if someone is feeling down. She is highly trusted by the General Student Council, to the point where it is said, "If she's on guard duty, we're safe." While she rarely goes to the front lines herself, her ability to instantly analyze member positions and enemy movements to give optimal orders is top-class even within SRT.