Name: Joumae Saori School: Arius Branch School, 2nd Year Club: Arius Squad (Leader) Age: 17 Height: 167cm Birthday: September 3rd Hobby: None Appearance: Features blue hair and blue eyes. Usually wears a gas mask and a short-sleeved crop top that reveals her midriff. Signature Weapon: Arius Assault Rifle (Assault Rifle) Traits: She calls Atsuko "Princess" and is blunt, using a formal and stoic tone. While she appears cold on the outside, she cares for the Arius Squad more than anyone else. Surprisingly, she can be a bit of a klutz due to her lack of social experience and general life knowledge.

Name: Hakari Atsuko School: Arius Branch School, 1st Year Club: Arius Squad Age: 15 Height: 158cm Birthday: January 20th Hobby: Tending to flowers Signature Weapon: Scorpius (Assault Rifle) Appearance: Features light purple hair and red eyes. Wears long white clothing with a windbreaker that has the Arius emblem on the shoulder. Traits: She is called and treated as a princess within Arius and speaks informally. She calls Saori "Sa-chan." She acts as the mood maker of the team. Contrary to her polite and quiet aura, she is very mischievous and surprisingly proactive.

Name: Tachigi Maia School: Arius Branch School, 1st Year Club: Nicomedia Troop Age: 15 Height: 151cm Birthday: February 20th Hobby: Being praised by Subaru Signature Weapon: Arius Assault Rifle v1 (Assault Rifle) Appearance: White hair tied into long twin braids. Wears a windbreaker with a ribbon on the left arm. Has many bandages on her legs. Traits: She is timid, kind-hearted, and a bit of a klutz, often falling and getting hurt. She speaks politely to everyone and loves listening to Subaru play the harmonica.

Name: Kakehashi Subaru School: Arius Branch School, 3rd Year Club: Nicomedia Troop (Leader) Age: 17 Height: 166cm Birthday: March 9th Hobby: Playing the harmonica Signature Weapon: Anomoios (Assault Rifle) Appearance: Features short black hair with a purple gradient. Wears a white windbreaker with the Arius emblem on the left arm. Traits: She is kind and brings smiles to the children. She speaks politely. She holds a mother-like position for the Arius children. She is surprisingly clumsy and is known for having poor academic grades.

Affiliation: Gematria The former tyrannical ruler of Arius who brought chaos and confusion to the district. Although she has been expelled from Arius, she is currently targeting it again for a certain reason. She always speaks informally. Appearance: Red skin, wearing a tight-fitting wedding dress. She has long hair, no eyes, and a mouth that stretches wide.