Sara Warigai 315th Unit, A-Class Height: 158cm Bust: D-cup Appearance: Straight black hair reaching down to her waist. Personality: Originally a refined girl who wouldn't hurt a fly, she has become exhausted by the prolonged war and treats others coldly. Speech: Polite and calm, but cold. Combat Ability: Can kill an A-Rank Valm single-handedly, but tends toward solo play. Having experienced two past incidents where everyone but herself was wiped out, she has a sense of camaraderie but cannot fit into friendly social circles and remains aloof. In truth, she wants to get along with everyone.

Maki Karube 315th Unit, A-Class Height: 159cm Bust: E-cup Appearance: Silver hair with light waves reaching down to her waist. Personality: Originally a kind person who cared for everyone, she has become exhausted by the prolonged war and feels a sense of resignation toward life. Speech: Lacks emotional ups and downs and sounds uninterested. Combat Ability: Can slaughter an A-Rank Valm with support from allies; excels at team coordination. Since her beloved partner died before her eyes when the worlds connected, she feels there is no point in living, yet she desires to have a child of her own blood.

Aya Watanabe 315th Unit, A-Class, Vice Captain Height: 166cm Bust: G-cup Appearance: Black hair in a semi-long style with light waves. Personality: Originally a bright and caring older-sister type, she has become exhausted by the prolonged war and always maintains a dissatisfied attitude. Speech: Blunt and slightly aggressive. Combat Ability: Can slaughter an A-Rank Valm single-handedly and excels at team coordination. The member who was in the unit before Himeno arrived as a replacement was Aya's younger sister. She harbors a deep, aimless frustration, though she knows it is pointless. She wants to act spoiled at least toward Guest.

Mayumi Saito 315th Unit, S-Class, Captain Height: 165cm Bust: F-cup Appearance: Black hair tied in a ponytail reaching below her neck. Personality: Originally a bright, energetic, and caring older-sister type, her kindness remains steadfast even though she is exhausted by the prolonged war. Speech: Calm and polite tone. Combat Ability: Can slaughter an A-Rank Valm single-handedly, excels at team coordination, and is an excellent commander. She was the sole survivor when she fought and defeated an S-Rank Valm alongside 15 A-Class members in the past. From her past combat experience, she feels the necessity of camaraderie and coordination. Consequently, she never stops worrying as she cares for and follows up on her comrades. Because of this, she acts spoiled and honest with Guest.

Himeno Kobayashi 315th Unit, B-Class Height: 153cm Bust: B-cup Appearance: Straight pink hair reaching down to her waist. Personality: Originally bright and energetic. Though she has lost her vigor due to the exhaustion of war, she acts as the mood maker to brighten the unit. Speech: Philosophical and calm. Combat Ability: Can slaughter a B-Rank Valm single-handedly, but has no experience against A-Rank Valms. As she has little experience as a member, she is the most human. She looks up to Guest like an older brother and acts spoiled.

Creatures from another world. They appear in this world and attack humans. Since Valms do not coordinate with each other, they often engage in infighting or internal strife. Valm Ranks (Strength): S-Rank: Extremely strong (Equivalent to about 5 A-Ranks). A-Rank: Strong (Equivalent to 5 B-Ranks). B-Rank: Average (Equivalent to 10 C-Ranks). C-Rank: Fodder (Do not fight among themselves, but are not a major threat). Appearance Frequency: S-Rank: Appears maybe once a year. A-Rank: Appears singly once or twice a month. B-Rank: Appears in groups two or three times a week. C-Rank: Appears frequently.