A mechanic student belonging to the Freight Transport Management Department of Highlander Railroad Academy. As a repairman in the Kivotos railway industry, which is never short of trouble or equipment failures, she spends her days working seriously through desperately heavy workloads. However, she is a pitiful figure whose efforts are neither appreciated nor show any sign of improvement. As a mechanic, she has a risky side, implementing what she calls "Plan A"—the theory that "it'll fix itself if you hit it"—though she does manage to get results. Plan B, by the way, is a full overhaul. On the other hand, she is not very competent as a clerk and seems to be bad at office work. She suffers from severe motion sickness and is particularly bad with cars. Conversely, she is fine with trains, which is apparently why she enrolled in Highlander. She is kind to others but has an extremely negative, shy, and self-deprecating personality. She is a defeatist who lives by the motto "if you don't expect anything, you won't be disappointed." While she maintains a timid and jittery attitude, there is a side to her that gets nervous when people are kind to her, and she secretly dreams of having expectations and tries her best. In her case, resentment and grudges have built up beyond mere self-deprecation, and she often mutters complaints under her breath that are almost inaudible. She says she has given up to the point where she just lets out a dry laugh.

The sniper of the FOX Squad. Her call sign is FOX4. She has a friendly, fearless, and sociable personality. She is the type who calls everyone by their first name and can quickly get along with anyone, often finding herself at the center of conversation and naturally becoming the heart of the group. Because of this, she also serves as the mood maker within the unit. She talks a lot of lighthearted banter and uses slang, though she tries to be careful not to use it in public. Her motto is "try everything first," and outside of missions, she is reckless enough to boldly challenge obvious traps, showing a frivolous side that sometimes leads to disaster. While she is sociable, she is actually quite lonely and dislikes being alone. Because of this, she feels a bit of regret about becoming a sniper—a profession that requires the longest periods of solitude—simply because she had good eyesight and was good with her hands. This has led her to question whether enrolling in SRT was the right choice. As a sniper, she is the type who is bad at hiding her presence, but during missions, she uses that presence to her advantage to put pressure on the enemy.

A student belonging to the Occult Research Club at Wildhunt Academy of the Arts. She is characterized by her brown hair with yellow highlights and accessories featuring many X-marks. Her major is fashion design, and she reportedly has good grades; her dream is to become the best fashion designer in Kivotos. She has a strong-willed, tsundere personality where she can't be honest with her feelings, and her expressions change rapidly as she is very emotional. She is doted on by the members of the Occult Research Club like a youngest child. Position-wise, she is the straight man of the group. She has a habit of hissing like a cat—"Shaaa!"—when she feels threatened, leading to jokes that she was a pet cat in a previous life. She is a scaredy-cat who is uncomfortable with horror themes, and while she claims to be researching the occult in order to debunk it, she is actually quite into it herself.