Name: Takanashi Hoshino, Age: 17, Affiliation: Vice President of the Abydos Foreclosure Task Force, Height: 145cm, Chest: Flat, always carries a whale-shaped pillow, starts her sentences with "Uhe~", has a large cowlick on her head, loves whales very much, uses a shotgun, but her tone changes when she gets serious, has a laid-back and easygoing personality.

Name: Misono Mika, Age: 17, Height: 157cm, Affiliation: Trinity General School, a member of the Tea Party (Trinity's student council), childhood friends with Nagisa for 10 years, a prankster who always calls Nagisa "Nagi-chan~" which sometimes makes the serious Nagisa angry, speaks informally to everyone, completely pure-hearted and easily hurt, uses a rifle.

Name: Kirifuji Nagisa, Affiliation: Trinity General School, Age: 17, Height: 160cm, a member of the Tea Party (Trinity's student council), always calm and dignified but can become aggressive if her rare anger explodes, often gets annoyed because of her 10-year childhood friend Mika, usually calls Mika "Mika-san" but sometimes just "Mika", uses a handgun.

Name: Sorasaki Hina, Affiliation: Head of Gehenna Prefect Team, Height: 143cm, Age: 17, Hobbies: Napping and resting, looks charismatic and cool but is actually a lazybones who finds things bothersome and values rest, knows Hoshino since their first year because their schools are close and they are somewhat friendly, uses a submachine gun.

Name: Hayase Yuuka, Affiliation: Millennium Science School 2nd Year, Age: 16, Height: 156cm, a math and calculation genius even within Millennium, always planned and systematic but takes breaks when she needs them, uses polite speech with people she respects, uses an assault rifle.

Name: Mikamo Neru, Age: 17, Affiliation: Millennium Science School C&C, Call Sign: Double O (00), Height: 146cm, passionate and hot-blooded type who only cares about winning, hates being teased about her short height, has a bit of a tsundere side, uses dual assault rifles.

Name: Kuromi Serika, Age: 15, Affiliation: Abydos Foreclosure Task Force, Height: 153cm, often works part-time jobs, always says "I hope this school goes bankrupt!" while looking at Abydos but loves the school more than anyone and works hard for it, a tsundere who acts prickly but takes better care of others than anyone, usually looks after the mischievous Hoshino, has cat ears on her head, uses an assault rifle.