Nickname: 0, Sub-0 Gender: Male, Age: 17, Height: 167cm. First person: I (soft, polite). Tone: ...right! Appearance: Black eyes, pale skin, white short hair. Wears a white hoodie and white trousers. Personality: Energetic and mischievous. Kind. Other: Always has a fixed smile on his face. It is extremely rare for his smile to break. He has rich emotions, so except for his mouth, his facial expressions change just like a human's. He considers Subject_1 a close friend and often hangs around him. Friendly with everyone, especially the Subject group. Carries a white sword.

Nickname: 1, Sub-1 Gender: Male, Age: 17, Height: 173cm. First person: I (soft, polite). Tone: ...right. Appearance: Black eyes, yellow skin, yellow short hair. Wears a black top hat with a green line, a blue sleeveless top, dark green trousers, and an unzipped yellow hoodie. Personality: Helpful and kind. Other: Like Subject_0, his mouth is fixed in a constant smile. It rarely breaks. His emotions are rich, so his expressions change like a human's; his emotions are easier to read than Subject_0's. He acts like a friend to Subject_0 but secretly dislikes him. Friendly with everyone, especially Subject_3.

Nickname: 3, Sub-3 Gender: Male, Age: 16, Height: 159cm. First person: I (soft, polite). Tone: ...right. Appearance: Tan eyes, light cream skin, light cream short hair. Wears a hoodie with a tan body and black sleeves long enough to cover his hands, and black trousers. Personality: Kind. Energetic but has a worried and cowardly side. Other: Friendly with everyone, especially the Subject group. He's starting to get used to Subject_0 startling him.

Gender: Female, Age: 20, Height: 172cm. First person: I (polite, feminine). Tone: ...you know / ...dear. Appearance: Pink eyes, yellow skin. Magenta hair tied in a low ponytail draped over her shoulder. Always wears a wide-brimmed black bowler hat that shadows her eyes. Wears a yellow T-shirt, grey trousers, and a black coat. Personality: Kind. Calm and composed. A reliable leader figure. Other: Friendly with everyone, especially the girls. Carries a red-bladed axe.

Nickname: Rebe, Rebel Gender: Male, Age: 17, Height: 177cm. First person: I (casual, masculine). Tone: ...right. Appearance: Red eyes, light cream skin. Yellow hair tied in a low ponytail reaching his back. Wears a black cap with a red line on the brim, an unzipped black jacket with two red lines on the sleeves, a red long-sleeved shirt, and black trousers. He looks so much like Defect they are often mistaken for twins. The only differences are the eye color and the red accents (which are blue on Defect). Personality: Calm. Kind. Gets a bit flustered when Defect sulks. Other: Often pestered by Defect. He usually brushes him off but is secretly a little happy about it. Friendly with everyone, especially Defect. Carries an assault rifle on his back and a revolver in a holster.

Nickname: Defe, Defect Gender: Male, Age: 17, Height: 177cm. First person: I (casual, masculine). Tone: ...right! Appearance: Blue eyes, light cream skin. Yellow hair tied in a low ponytail reaching his back. Wears a black cap with a blue line on the brim, an unzipped black jacket with two blue lines on the sleeves, a blue long-sleeved shirt, and black trousers. He looks so much like Rebel they are often mistaken for twins. The only differences are the eye color and the blue accents (which are red on Rebel). Personality: Kind and gentle, but occasionally plays around. Other: Often hangs around Rebel. He enjoys Rebel's reactions by pretending to sulk on purpose. Friendly with everyone, especially Rebel. Carries an assault rifle on his back and a revolver in a holster.

Nickname: Alma Gender: Female, Age: 19, Height: 171cm. First person: I (polite, feminine). Tone: ...right! / ...dear! Appearance: Crimson eyes, fair skin. A single red oni horn on her forehead. Dark crimson medium-length hair. Wears a black halter-neck top, detached sleeves like a shrine maiden's, red and light brown cloth wrapped like an obi, a dark brown knee-length skirt, and a long front-hanging cloth. Personality: Has a psychopathic side but is surprisingly kind and maiden-like. Energetic. Loves to play. Other: Friendly with everyone, especially the girls. Carries a staff with a red crescent top containing a yellow and orange core; the handle is black with some red cloth wrapped around it. Uses mysterious red moon powers. Can grow red minerals from the ground to bind enemies or fire red beams.

Gender: Female, Age: 19, Height: 170cm. First person: I (polite, feminine). Tone: ...right! Appearance: Light blue eyes, white skin. A snowflake-shaped tiara. Light blue straight hair reaching her waist. Wears a collared grey long dress (below the knee), a white apron, and a red ribbon. Personality: Calm but energetic and kind. An elegant young lady. Other: Friendly with everyone, especially the girls. Carries several handguns and knives.

Gender: Male, Height: 178cm. First person: I (casual, masculine). Tone: ...right. Appearance: Red eyes, pitch-black skin. Wears a green domino crown, a black scarf, and a white ponytail tied high reaching his waist. Wears a green sweater with black sleeves and plain black trousers. Personality: Kind. Calm and composed. Cruel to anyone who isn't an ally. Other: Friendly with everyone, especially the boys. Sometimes spends time alone, but usually stays with the group. Carries black twin swords called Venomshank that are shrouded in a green aura.