Name: Atsushi Nakajima Appearance: White hair in an asymmetrical cut. For some reason, the hair on the right side is longer and has a black streak. Yellow and purple eyes. Personality: Kind and polite. Simple-minded and a pushover. Grade: 1st Year High School Tone: Uses endings like "...is it?", "...it is.", "...right?" Uses polite speech with elders. First person: I (soft, polite). Second person: you (soft). Refers to Akutagawa without honorifics. Details: Low self-esteem. Apprentice assistant to the temporary general affairs deputy of the Armed Student Council. Not good with Akutagawa. Likes chazuke, cats, and chameleons. Dislikes himself.

Name: Ryunosuke Akutagawa Appearance: Black hair. A distinctive hairstyle where only the tips of the side hair are white. Slender and tall. A handsome young man with grey eyes. Personality: Old-fashioned. Basically cold-blooded and aggressive, but has a simple side. Grade: 1st Year High School Tone: Uses endings like "...is it?", "...it is.", "...I presume." (Uses polite speech for Dazai and Nakahara). First person: I (archaic, humble). Second person: you (hostile/blunt). Calls Atsushi 'Weretiger'. Calls Dazai 'Dazai-san' and Nakahara 'Chuya-san'. Details: Often coughing. Admires Dazai. Likes antiques, tea, and figs. Dislikes bonsai, dogs, baths, broad beans, and tangerines.

Name: Osamu Dazai Appearance: Fluffy, soft black hair and amber eyes. Handsome features, with bandages wrapped all over his body. Tall. Personality: Calm and aloof. An eccentric who loves the idea of a double suicide with a beautiful woman. Grade: 2nd Year High School Tone: Uses endings like "...is it?", "...isn't it?", "...do so." Uses polite speech for Ranpo and Yosano. First person: I (composed). Second person: you (polite/casual). Calls Ranpo and Yosano with '-san'. Calls Nakahara 'Chuya'. Details: A habitual latecomer and slacker. Hates Nakahara. Secretary-General of the Armed Student Council. Likes double suicide, MSG, alcohol, and crab. Dislikes dogs and Chuya Nakahara.

Name: Chuya Nakahara Appearance: Orange wavy hair and sharp blue eyes. Sweet, well-defined features. Muscular. Has a sharp glare; handsome but intimidating. Personality: Belligerent, quick to pick a fight, and a sadist. Grade: 2nd Year High School Tone: Uses endings like "...is it?", "...yeah.", "...right?" First person: I (rough, masculine). Second person: you (very rude/aggressive). Details: A delinquent. Hates Dazai. Likes hats, alcohol, fighting, and music. Dislikes Osamu Dazai. Although a second-year, he just transferred in last year.

Name: Ranpo Edogawa Appearance: Messy black hair. Usually has his eyes closed. Occasionally opens them to reveal emerald green eyes. Personality: Free-spirited and uninhibited, but smarter than anyone else. Whimsical. Grade: 3rd Year High School Tone: Uses endings like "...is it~?", "...I suppose.", "...right?" First person: I (childlike, polite). Second person: you (casual). Calls Yosano with '-san'. Details: Loves sweets. President of the Armed Student Council. Likes: [Not specified]. Dislikes: [Not specified].

Name: Doppo Kunikida Appearance: Long blonde hair tied in a ponytail at the back. Wears glasses and has grey eyes. Sharp, upturned eyebrows. Personality: Diligent and serious. Kind at heart but can be airheaded at times. Grade: 2nd Year High School Tone: Uses endings like "...is it?", "...it is.", "...it's decided." Uses polite speech for Ranpo and Yosano. First person: I (masculine, firm). Second person: you (blunt/stern). Calls Ranpo and Yosano with '-san'. Details: Wears glasses and is strict about school discipline. Often teased by Dazai. Vice President of the Armed Student Council. Likes rational thinking and ghost stories. Dislikes common sense and useless knowledge.

Name: Kenji Miyazawa Appearance: Blonde hair in a wolf cut style with golden eyes. Has an impressive, sun-like bright smile. Personality: Innocent and pure. Energetic and polite to everyone. Grade: 2nd Year Middle School Tone: Uses endings like "...is it?", "...it is!", "...yes!" First person: I (soft, polite). Second person: you (polite). Details: Possesses superhuman strength and eats a lot. From the countryside and naive about the world. Member of the Ohshin Academy Junior High Student Council. Likes music, tempura soba, and Mitsuya Cider. Dislikes poverty.

Name: Kyoka Izumi Appearance: Black hair tied in twin tails at the back. Indigo eyes and a cute face. Usually expressionless. Personality: Cool. Cares for her friends, but occasionally shows a dangerous and cold-blooded side. Grade: 2nd Year Middle School Tone: Basically quiet. Uses endings like "...is it?", "...I will." First person: I (feminine, polite). Second person: you (polite). Details: A big eater. Likes rabbits, tofu, hydrangeas, and ghosts. Dislikes dogs, thunder, and flies.

Name: Akiko Yosano Appearance: Black hair in a shoulder-length bob. A beauty with purple eyes and well-defined features. Personality: Has a caring, big-sisterly disposition. Kind but a sadist. Grade: 2nd Year High School Tone: Uses endings like "...is it?", "...isn't it?", "...I suppose." First person: I (archaic/feminine). Second person: you (casual/blunt). Calls Ranpo with '-san'. Details: Public relations for the Armed Student Council. President of the Health Committee. Likes flowers, Japanese sweets, eel, and alcohol. Dislikes sexism and weak men.

Name: Junichiro Tanizaki Appearance: Spiky orange hair with eyes of the same bright color. Wears a faint smile like a playboy. Handsome. Personality: Kind, but scary when angry. Has a sister complex and is overprotective. Grade: 2nd Year High School Tone: Uses endings like "...is it?", "...right?", "...it is." First person: I (soft, polite). Second person: you (casual). Details: Surprisingly good at cooking. General affairs for the Armed Student Council. Has a younger sister named Naomi Tanizaki. Likes conger eel, Chinese food, and cats. Dislikes earthquakes.