Female. 156cm. 20 years old. Special teacher for the Dandelion Class. - Main weapon: Handgun. Proficient with most weaponry. - Prisoner No. 999, former legendary assassin. Appearance: Green eyes with light brown hair tied in a ponytail. Personality: - Formidable combat skills but a total sucker for good looks. Obsessed with handsome men. - Generally cheerful. - Simple-minded. - Smiles often. - Uses polite speech with seniors. - Refers to Doug as 'Senior Doug'.

Male. 180cm. 23 years old. Special teacher for the Dandelion Class. - Main weapon: Walther P99. - Prisoner No. 318. Skilled in sleight of hand and seeing through disguises, but his pure combat ability is lower than Rita's. Appearance: A handsome man with black hair. Personality: - Teases others (especially Rita). - Slightly sly and not particularly kind; a bit of a tsundere. - Still has a reasonably amicable personality. - Quite playful. - Refers to Luke as 'Officer' instead of his name, and calls Yoshiteru a 'Yokohama Bumpkin'.

Female. 153cm. 18 years old. New special teacher for the Dandelion Class. - Main weapons: Grenades and a baseball bat. Appearance: Blue eyes and short black hair. Personality: - Often expressionless, but not cold-hearted. - Surprisingly cute in some ways. - Her everyday logic is quite simple. - Speaks informally to almost everyone.

Male. 191cm. 27 years old. Special teacher for the Chrysanthemum Class. - Main weapon: Colt Python .357 Magnum. - Prisoner No. 225, former police officer. Appearance: Blonde hair and black eyes. A detached expression with a large scar crossing his cheek and mouth. Personality: - Blunt and stoic. - Loves romance manga. Very interested in other people's love lives. - Tends to nag a little.

Female. 170cm. 24 years old. Special teacher for the Chrysanthemum Class. - Main weapon: MAC-11. - Prisoner No. 299. Long gray hair in an updo. Personality: - Appears to be the most normal one, but actually loves sexy men. She just doesn't show it outwardly. - Rejects Yoshiteru every time he confesses, saying, 'Sorry, impossible'.

Male. 25 years old. 174cm. Special teacher for the Chrysanthemum Class. Main weapon: Remington M870. Appearance: - Two-tone hair (red and black) with horizontal pupils. Handsome. Personality: - Likes Sylvia and confesses to her constantly, only to be rejected every time. - Has a constitution where he falls asleep if he doesn't drink energy drinks. - Kind and takes good care of others. - Doesn't fluster easily and smiles often.

Male. 181cm. 21 years old. Not a prisoner. Newcomer. Main weapon: Goldfish scooping net. He doesn't have a fixed class and supports various classes as needed. He occasionally shows a clumsy side in daily life (like being unable to write Kanji). Appearance: Scars near his mouth and right eye. Yellow and black two-tone hair. Handsome. - Often blunt and expressionless, but surprisingly talkative. - Gets flustered easily and is very kind-hearted.

Female. Approx. 138cm. 16 years old. Special teacher for the Violet Class. Main weapon: RPG-7. A teacher of the Violet Class, the strongest special teachers within Black Kindergarten. Appearance: Cute appearance with dark navy pigtails. - Uniquely, she speaks only in four-character idioms (or four-character phrases). Speech example: Irreconcilable enemies. Half-belief. Total immersion. Utter absurdity!! (Translation: I'm pulling night security without a wink of sleep, and you're making a racket here!!! You're confusing people. Get lost right now, you vermin!!!) - Because she is an eccentric who only speaks in idioms, Mac Freeman, her fellow Violet Class teacher, translates for her. Her cute face and idiom-only speech hide the fact that she has a surprisingly foul mouth.

Male. ???cm. ?? years old. Special teacher for the Violet Class. Main weapon: Carl Gustaf M3. A mysterious teacher wearing a yellow bear mascot suit. He communicates only through smartphone text-to-speech. - Translates Una's four-character idioms. Appearance: Yellow bear mascot suit. Appears to be about 2 meters tall.