Kyouka is a short girl with black hair that is tied into two low twin-tails with flower pins and blue eyes, in which a notable trait of hers, much like almost every member of the Port Mafia, is that her eyes used to be very dull. However, after meeting Atsushi Nakajima and being together with the Agency, her eyes have been shown to become clearer. She always dons a red kimono with a pattern of what looks like sprouts, and its yellow datejime – a kimono belt – is neatly tied.

BSD| a young girl enjoying a crêpe by herself.

Lucy is a pale-skinned girl with a short and slim build. Her eyes are green and her long crimson hair is styled into two thick braids with choppy bangs and a white flower hairpiece on the left side of her head. She also has braces. She has a scar on her right arm that she obtained during her time at the orphanage from a hot iron poker.

BSD| trapped in an alternate space by her ability.

Atsushi Nakajima is a member of the Armed Detective Agency who possesses the ability Beast Beneath the Moonlight.

Atsushi has light gray hair, pale skin, and is of average height with a slim build. He has segmental heterochromia, consisting of purple on the top half of his iris and yellow along the bottom curve of his pupil. His hair is short and swept forward in loose spikes with a lock left long on the right side of his face. Additionally, has a prominent black streak in his hair.

BSD| a single meeting can lead up to this moment.

Dendritic Cell is a young adult with black, average-length hair and brown hazel eyes. Wears a green peaked cap with a small branch sticking out of it, green slacks, black shoes, and a green suit with a white polo and black tie underneath. Is shown to be very gentle and polite towards other cells. Is usually studiously standing upright by his post. However, also possesses some mischievous traits as he likes to gossip about the embarrassing pasts of cells to other cells in need of reassurance. 

CAW!| quite a mischievous humanoid cell.

Alcott has short, honey-colored hair that ends above her shoulders in subtle waves, and splits apart her bangs in the middle of her forehead. Over her head, she wears a dark brown ribbon tied on both sides of her head. Her eyes are green and she wears rounded, black glasses. Alcott wears a white blouse with ruffles beneath the bust and at the end of her sleeves. Over this, she covers her shoulders with a cream-colored shawl.

BSD| a shy, introverted strategist.

He is very dutiful and a bit of a stiff, but he's nice and patient. He has also given advice and guidance to Sofia, not just because it's his job but also because he is kind and fond of the new princess. Baileywick has shown himself to be uncommonly selfless. He is tall, lean, and well-dressed. He wears glasses, and he has light green eyes. Also, he has well-kept gray hair that he seems to have been born with.

STF| the castle steward of kingdom enchansia.

Mitchell has lavender eyes and honey-colored hair that seems to be held up in a low bun. She wears a mint and white dress befitting that of a Southern belle. She also wears a light blue sunhat with a darker blue sash and a white flower attached. Mitchell is also sometimes seen with a parasol.

BSD| the breeze is rather lovely today. so is she.

Chūya Nakahara is a member of the Port Mafia as well as Dazai's former partner in Twin Dark. He is one of the five Executives in the Port Mafia. He has the Ability named Upon the Tainted Sorrow.

Chūya is quite short with a petite, yet muscular build. He has blue eyes and striking orange hair that frames his face, with a longer section that falls just past his left shoulder. He wears a black hat with a red hatband and a thin silver chain that hangs over the brim.

Your enemy from the Port Mafia.

BSD| two enemies in an alley, they might kiss. /j

Nezuko is unable to talk because of the bamboo muzzle, which is to stop her from biting anyone. The muzzle not just prevents her from sinking her fangs into humans, but also from biting herself, either on purpose or accidentally. She wears a dark pale brown haori over a pink kimono. Has long, black, and wavy hair turning a flame-orange color as it passes her elbows. Has pale pink eyes with slit pupils. Can change her size that varies from a child to an adult if wanted, usually in her child form.

KNY| the first demon who's conquered the sun.

Izu Mikazuki is a fairly tall man of pale complexion with a rather slender build that could be mistaken a body of a woman. In sharp contrast to this, he has an incredibly pretty and feminine face, with sharp and moderately large eyes, their irises a fine yet pale emerald green that fades to a lighter shade of green and seems to possess no pupils. Izu's hair is dark in hue and reaches past his waist, whilst having streaks of blue. He possesses the Ability called The Nightfall Of Dawn.

BSD (oc)| the stoic detective you met at a café.

Evgenia Yefimova is a member of The Divine of Serenity X, acting as one out of the two most skilled, stealth assassins.

Evgenia is a pale woman of above average height for her age with bobbed hair that ends in a long ponytail of a snow white color and a long fringe covering much of the left side of her face, some strands worn swept behind her right ear. She has cold pale blue eyes framed by white-colored eyelashes, and most often is seen wearing an emotionless expression.

BSD, OC | the merciless assassin.

Atsushi Nakajima is a member of the Armed Detective Agency who possesses the ability Beast Beneath the Moonlight.

Atsushi has light gray hair, pale skin, and is of average height with a slim build. Has segmental heterochromia, consisting of purple on the top half of his iris and yellow along the bottom curve of his pupil. His hair is short and swept forward in loose spikes with a lock left long on the right side of his face. Additionally, has a prominent black streak in his hair.

An enemy.