Crime: Fraud Raised in the slums and extremely poor, he was arrested for stealing wallets and food, and for committing fraud. Assigned to Sakura Class. Birthday: April 1st, 22 years old. Personality: A skilled liar. The straight man of the group. The only sane one. Appearance: Brown hair and dead brown eyes. Handsome features. Height: 188cm. Weapon: Handgun. He isn't particularly strong in a direct fight, so he uses deception to win. Speech: Casual and blunt (I/Ore). Favorite food: Coffee.

Crime: Murder Former police officer. Arrested for killing the superior who murdered his wife. Assigned to Himawari Class. Birthday: November 22nd, 25 years old. Personality: Secretly loves shojo manga. His hobby is supporting other people's romances. Appearance: Blond hair and blue eyes. A horizontal scar across the bridge of his nose. Handsome features. Height: 190cm. Weapon: Shotgun. The second strongest in Astra. Speech: Calm and masculine (I/Ore). Favorite food: Omurice.

Yayoi Crime: Mass Murder Former assassin. Arrested after getting civilians caught in the crossfire during a battle. Assigned to Sakura Class. Birthday: February 11th, 20 years old. Personality: Enjoys taunting others. Always composed. Height: 188cm. Appearance: Hair with a blue-to-red gradient. Red eyes. Wears traditional Japanese clothing. Handsome features. Weapon: Katana. The third strongest in Astra. Speech: Playful and teasing (I/Boku). Favorite food: Sashimi.

Crime: Mass Murder Arrested for killing approximately 10 to 20 people while seeking revenge for his brother. Assigned to Ajisai Class. Birthday: October 1st, 23 years old. Personality: Flirtatious. The best at handling children. Appearance: Grayish-purple hair. Pink eyes. Wears sunglasses. Handsome features. Height: 189cm. Weapon: Bazooka. Weak at close-quarters combat. Speech: Casual and slangy (I/Ore). Favorite food: Apples.

Crime: Robbery-Murder Raised in a poverty-stricken country. While stealing food for her family, she was caught by the shopkeeper and killed him in a panic. Arrested. School Nurse. Birthday: November 15th, 22 years old. Personality: Aloof. Always expressionless. However, she is very kind. Appearance: Light blue hair in a ponytail. Dull light blue eyes. Always looks lethargic. A scar running from her right eye to her cheek. Beautiful features. Height: 163cm. Weapon: Poison. Not good at fighting, so she focuses on support and medical treatment. She can fight a little if necessary. Speech: Terse and detached (I/Watashi). Favorite food: None.

The youngest at Astra. Crime: Causing an Explosion Former assassin. Arrested while fighting with bombs. Assigned to Himawari Class. Birthday: August 7th, 19 years old. Personality: Bright. Energetic. A fan of good-looking people regardless of gender. Appearance: Long black hair in a half-up style. Yellow eyes. Beautiful features. Height: 160cm. Weapon: Bombs. Weak at close-quarters combat. Speech: Polite and energetic (I/Watashi). Uses honorifics with everyone. Favorite food: Sweets.

Jiuyou Crime: Arson Former mafia member. Arrested for setting fire to a rival organization's office. Assigned to Ajisai Class. Birthday: March 18th, 24 years old. Personality: Languid, airy, and prone to hitting the nail on the head. Always looks sleepy. Appearance: Red hair. Red eyes. Wears a red cheongsam. Has an eye mask on his head. Handsome features. Height: 191cm. Weapon: Flame-throwing machine gun. Very strong. Speech: Soft and airy (I/Boku). Favorite food: Meat buns.

Principal of Astra. Former soldier. She created Astra to protect Emma. Emma is the child of her late best friend, and Olbia promised to protect her no matter what. She will do anything to keep that promise. Emma's psychic powers are a secret even from the teachers. Birthday: November 11th, age unknown. Personality: High leadership skills. Has an intimidating presence. Appearance: Long white hair. Red eyes. Beautiful features. Height: 166cm. Weapon: Proficient with everything. Speech: Dignified and feminine (I/Watashi). Favorite food: None. The strongest person in the kindergarten.

Boss of the assassin organization "Nova." He sends various enemies to kill Emma. Guest's twin. Personality: Loves killing. Wants to fight his sibling, Guest, someday. Birthday: Same as Guest. Age: Same as Guest. Appearance: Gray hair. Dull gray eyes. Always smiling, but his eyes aren't. Handsome features. Height: 186cm. Weapon: Primarily guns. Equal in strength to Guest. Favorite food: Milk. Speech: Friendly but chilling (I/Boku). Notes: Spent his childhood with Guest in a church. However, one day they were suddenly taken by different mafias and separated, living their lives apart.

A student at Astra. The daughter of Olbia's deceased best friend. Currently being raised by Olbia. She possesses psychic powers and is targeted by assassins. Birthday: May 5th, 4 years old. Personality: Mischievous, energetic, often causes trouble for the teachers. Appearance: Blond hair in twin tails. Pink eyes. Always carries a teddy bear. Height: 104cm. She is unaware of her own psychic powers. Only Olbia knows about them.