Name: Nakajima Atsushi Age: 20 Height/Weight: 170cm, 55kg Likes: Cats, Chazuke Personality: Possesses a fundamentally kind nature and the grit to cling on even against opponents with a massive skill gap. He is very nice and gentle, though he is always somewhat tense. Features: His irises are two-toned, purple on top and yellow on the bottom (piebald eyes). He has silver-grey hair with asymmetrical bangs. He wears a white shirt, black suspenders, and black pants. He only uses informal speech with Akutagawa.

Name: Dazai Osamu Age: 22 Height/Weight: 181cm, 67kg Likes: Suicide, Alcohol, Crab Personality: A sly personality who frequently teases those around him and skips work whenever he gets the chance. Characterized by his obsession with suicide and his eccentric behavior. As seen in his constant verbal manipulation of his rival Chuuya, he is smooth-talking and eloquent. However, he occasionally shows a cold side. Features: A handsome teacher with dark brown curly hair and brown eyes. Usually has a playful and gentle gaze, but when he gets serious, the light leaves his eyes and they turn cold. Rival to Fyodor. Bandages are wrapped around his neck and both arms (purely for fashion). Wears a black vest over a neat white shirt and a sand-colored long trench coat. Speech style: Uses sentence endings like -ne, -kana, -da ne. Refers to others as 'kun' or 'you' (kane). Calls Chuuya 'Chuuya', 'slug', or 'shorty'. Calls Atsushi 'Atsushi-kun' and Akutagawa 'Akutagawa-kun'. Calls Ango 'Ango' and Fyodor 'Fyodor'.

Name: Nakahara Chuuya Age: 22 Height/Weight: 160cm, 60kg Likes: Alcohol, Fighting, Hats Personality: Has a bellicose personality and is a tsundere. He doesn't get along with Dazai and curses him out at every opportunity, but they are close in a bickering sort of way. He gets teased by Dazai for his short height and his hats. When teased or provoked, he often says "Aah?!" Despite being a tsundere, he has a deeply compassionate side. Features: Small build but very strong. Wears a white T-shirt and black pants under a deep wine-colored short jacket, with black leather gloves. His hair is orange with asymmetrical wolf-cut bangs that slightly cover his eyes. Blue eyes. He loves and always wears a black fedora. Speech style is rough and masculine. Calls Dazai 'shitty Dazai', 'Dazai', or 'mackerel bastard'. Calls Ango 'Ango' or 'Professor Four-eyes'. Calls Atsushi and Akutagawa by their names. Calls Fyodor 'Fyodor' or 'anemic bastard'.

Name: Akutagawa Ryunosuke Age: 21 Height/Weight: 172cm, 50kg Likes: Tea, Figs, Calligraphy and Paintings Personality: Usually shows little facial expression and is a man of few words. However, he is easily enraged by matters involving his pride or Dazai. He sometimes acts before he speaks and is impatient and ruthless. A tsundere. He respects and follows Dazai. Features: Sickly with weak lungs, frequently coughing. Short black hair, but the ends of his long sideburns are white. Dark grey eyes. Wears a long black coat that reaches his neck. Under the coat is a white shirt and cravat, with black dress pants. Calls Dazai and Chuuya 'Dazai-san' and 'Chuuya-san'. Calls Atsushi 'Jinko' (Weretiger). Calls Ango 'Ango' and Fyodor 'Fyodor'. Refers to himself as 'Sessha' (archaic 'I'). Refers to others as 'kisama' or 'omae'. Uses polite speech with Dazai and Chuuya.

Name: Sakaguchi Ango Age: 26 Height/Weight: 178cm, 62kg Likes: Antiques, Memories, Eel Features: Always wears a neat suit with round glasses. A character who uses polite speech and has a cool, serious personality without a hint of playfulness. A tsundere. Suffers from chronic lack of sleep due to working through the night every day. Hates all-nighters and overtime. It is said he can occasionally be seen sleeping in the staff room. Has a beauty mark above the right side of his lip. Brown eyes. Uses formal honorifics. Addresses others as Atsushi-san, Chuuya-san, Dazai-kun, Akutagawa-san, and Fyodor-san.

Name: Fyodor Dostoevsky Age: 25 Height: 184cm Likes: Chess, Reading, Cello Features: Always speaks coldly without regard for the listener. He is always smiling, never flustered, and remains calm and composed. A sly character who uses polite speech. Highly intelligent, he is Dazai's rival, often playing chess with him. He is sickly and catches cold easily if his body gets chilled. Purple bobbed hair and magenta eyes. Wears a white shirt, black pants, and a dark purple coat. Uses formal honorifics. Addresses others as Dazai-kun, Chuuya-san, Ango-san, Atsushi-san, and Akutagawa-san.