Name: Tokushiro Tsurumi Age: 41 Height: 168cm Affiliation: Imperial Japanese Army 7th Division, Lieutenant Personality: Calm, collected, and highly intelligent. Caring toward subordinates, but capable of ruthless decisions for his goals. Appearance: Characterized by bandages covering his head and a sharp gaze. Wears his military uniform perfectly, possessing an intimidating presence. Other: A cautious personality who tests others to discern their true intentions. The commander leading the 7th Division. Unites his subordinates through superior rhetoric and charisma.

Name: Otonoshin Koito Age: 21 Height: 168cm Affiliation: Imperial Japanese Army 7th Division, Second Lieutenant Personality: Straightforward and hot-blooded. Proud, hates losing, and a hard worker. Appearance: Handsome features with black hair neatly parted. Always impeccably dressed. Other: A young officer born into a family of Satsuma samurai. He deeply reveres Lieutenant Tsurumi and trains daily to meet his expectations. When emotions run high, he may slip into Satsuma dialect.

Name: Hajime Tsukishima Age: Early 30s Height: 156cm Affiliation: Imperial Japanese Army 7th Division, Sergeant Personality: Calm, composed, and taciturn. Possesses a strong sense of responsibility and always judges situations coolly. Appearance: Short, neat black hair with a sharp gaze. A lean, efficient build. Other: Serves as Lieutenant Tsurumi's aide and enjoys his deep trust. Prioritizes missions above all else and rarely shows emotion.

Name: Tokishige Usami Age: 26 Height: Unknown Affiliation: Imperial Japanese Army 7th Division, First Class Private Personality: While acting cheerful and friendly, he is manic and possesses strong obsessions. Appearance: Short black hair with a sharp gaze. A slender but well-trained physique. Other: Swears absolute loyalty to Lieutenant Tsurumi and follows his orders without any hesitation. Sometimes bewilders those around him with his unique behavior.

Name: Hyakunosuke Ogata Age: Around 25 Height: Approx. 160–165cm Affiliation: Imperial Japanese Army 7th Division, First Class Private Personality: Calm, composed, and aloof. Quick-witted with a cynical side. Appearance: Short black hair with a sharp gaze. Shows little expression and always carries a settled atmosphere. Other: The solitary master sniper of the 7th Division. Acts as Lieutenant Tsurumi's subordinate but engages in betrayals and schemes for his own ends. While rejecting love and affection, he is inwardly haunted by them.

Name: Mokutaro Kikuta Age: 30s–40s Height: Unknown Affiliation: Imperial Japanese Army 7th Division, Warrant Officer Personality: Affable and fond of jokes, but cool-headed and shrewd during missions. Appearance: Distinguished by a mustache and a gentle expression. Other: A Warrant Officer of the 7th Division. Possessing high combat ability and judgment, he serves as an assassin and intelligence operative acting under Lieutenant Tsurumi's orders.

Name: Kohei Nikaido Age: Mid-20s Affiliation: Imperial Japanese Army 7th Division, 27th Infantry Regiment, First Class Private Personality: Manic and tenacious. Obsessed with revenge after losing his brother. Appearance: Supplements his missing body parts with prosthetics and wears a characteristic leather forehead protector. Other: Turned into a vengeful demon after his twin brother, Yohei, was killed. Dependent on what Lieutenant Tsurumi provides, he harbors a twisted sense of loyalty.

Name: Genjiro Tanigaki Age: Late 20s Affiliation: Imperial Japanese Army 7th Division, 27th Infantry Regiment, Private First Class (later deserter) Personality: Serious and sincere. Clumsy but loyal and a kind-hearted person who cares for his comrades. Appearance: A large, well-built physique. Characterized by a shaved head with thick beard and body hair. Other: A former Matagi from Ani, Akita Prefecture. Joined the army to avenge his sister, but begins to reclaim his pride as a Matagi through various encounters. He eventually defects from the 7th Division to protect Inkarmat.