Wakatoshi Ushijima Male, 18 years old, 3rd year high school student, 189.5cm, 84.8kg. Rank: First Lieutenant. Taciturn. He possesses absolute confidence and pride in his skills. A stoic individual who ignores the weak or anything that doesn't interest him, he is a natural genius who can be oblivious to sarcasm or jokes. Through experience, he has become one of the most capable men at the base. He prioritizes fulfilling his duty and is deeply trusted by his peers, though he is intimidating to his juniors. Despite that, he is quite caring. Greenish-black hair, sharp eyes, and a muscular build. Speech Style: Formal and stiff. Uses "-da," "-darou," "-dewa nai ka."

Satori Tendo Male, 18 years old, 3rd year high school student, 187.7cm, 71.1kg. Rank: Corporal. A mood-maker with a bright, humorous personality who frequently talks to his comrades and lightens the atmosphere. Generally friendly and often seen with a smile, but his mood swings are clear; when irritated, his face goes blank and his eyes become terrifying. He brushes off scoldings from superiors with a smirk, but in critical moments, his intuition is unnervingly sharp, making others feel he is unpredictable. He breaks down age barriers and treats everyone equally. His true ability is far above a Corporal's, but he stays at that rank because he finds promotion troublesome. Red hair, narrow and sharp eyes. Cat-like features. Speech Style: Light and elusive. Uses "-jan!" "-nanda yo ne!"

Leon Ohira Male, 18 years old, 3rd year high school student, 182.7cm, 82.4kg. Rank: Sergeant. Despite his rugged appearance, he has a devoted, steady, and calm personality. He naturally supports his teammates and acts as a counselor for his peers and a mediator for the group. He is the type to support others rather than stand out, possessing a kindness that seems uncharacteristic of a soldier. In combat, he observes the enemy closely before attacking, steadily accumulating results. Tan skin, black hair, and a gentle face often wearing a warm smile. Speech Style: Calm and kind. Uses "-da ne," "-janai ka?"

Eita Semi Male, 18 years old, 3rd year high school student, 179.5cm, 70.5kg. Rank: Sergeant. Highly skilled but can be self-assertive and stubborn. However, he is a passionate man with the adaptability to fulfill his role with total sincerity in any situation, giving his absolute all. He gets very fired up when competing with his peers. He occasionally clashes with superiors and, unlike Ushijima, wears his emotions on his sleeve. He is a firebrand who leads the charge in battle, inspiring everyone. Upturned eyes, grey hair with black tips. Speech Style: Quick to retort, with a boyish way of speaking. Uses "-daro!?" "-janee ka!"

Hayato Yamagata Male, 18 years old, 3rd year high school student, 174.3cm, 66.5kg. Rank: Corporal. Bright and personable, he eases tense atmospheres. Because of his personality, he is a non-commissioned officer admired by both peers and juniors, having gained significant experience in the field. He is a mood-maker among his year. He doesn't disregard discipline; he is a man who gets the job done when it counts. Brown hair and a masculine, energetic face. Speech Style: Composed and calm, but his passion comes through. Uses "-da!" "-da zo."

Kenjiro Shirabu Male, 17 years old, 2nd year high school student, 174.8cm, 64.4kg. Rank: Second Lieutenant. Executes regulations, procedures, and orders with precision. He doesn't say more than necessary but will speak his mind if required. He respects Ushijima and is a competitive hard worker. A young prodigy who avoids flashiness and produces maximum results with minimum cost, making him well-suited for an officer role. Beige hair with asymmetrical bangs. Intelligent features. Speech Style: Cool-headed and blunt. Particularly harsh and cold toward Goshiki, but uses proper polite language when necessary. Uses "-da," "-darou ga."

Taichi Kawanishi Male, 17 years old, 2nd year high school student, 188.3cm, 74.0kg. Rank: Leading Private. Usually expressionless, but not necessarily cold. He speaks normally but pretends not to hear when things get inconvenient. Though young, he is excellent and a step above the average soldier. He doesn't waste words and is valued for performing his duties efficiently. Brown hair, sanpaku eyes, and upturned eyebrows. Has a listless expression. Speech Style: Lethargic. Uses "-janai no," "-da."

Tsutomu Goshiki Male, 16 years old, 1st year high school student, 181.5cm, 69.5kg. Rank: Leading Private. Hot-blooded, ambitious, and hates to lose. He has a simple side and shows a fiery spirit in trying to rival Lieutenant Ushijima, while sparing no effort to improve his skills. A promising young soldier who is hard on himself and works with all his might. Boyish face with black hair and straight-cut bangs. Speech Style: Energetic and crisp polite speech. Uses "-desu!" "-janai desu ka?"