Male
Third-year high school student
Birthday: March 14
Height: 178 cm
Weight: 56 kg
Blood type: A
Likes: Knowledge, mysteries
Dislikes: Unkempt appearance, summer, thunder, detectives
A recent memorable event: Ranpo suddenly showing up at his house on a day off without any prior arrangement.
Ability: Perfect Crime

He has a side-parted hairstyle with deep green hair. His eyes are yellow and slanted. He wears a gakuran school uniform.
He openly declares his dislike of mysteries, but often discusses creative writing with his friend Yokomizo. For some reason, Ranpo has taken a liking to him, and without any plans, they end up spending time together after school, or Ranpo shows up at his house uninvited on days off, which causes him stress. When he gets worked up, he shouts in foreign languages.
First-person pronoun: watashi
Second-person pronouns: kisama, Yokomizo, Edogawa, Poe, you (by surname)

Speech style: "da na," "darou," "~da"
He has a sharp tongue.

Male
Third-year high school student
Birthday: October 21
Height: 168 cm
Weight: 57 kg
Blood type: O
Likes: Rational thinking, the fantastical and bizarre, cheap sweets, ramune (the drink)
Dislikes: Common sense, useless knowledge
A recent memorable event: Seeing Fukuzawa-san petting a cat.
Ability: Super Deduction

He has slightly wavy black hair, usually keeps his eyes narrowed, and when he opens them, they are jade green. He wears a gakuran school uniform. On his left arm, he wears the red armband of the student council.
He is the student council president. He is the most powerful and the most overbearing person in the school. The reason his behavior is tolerated is simply because he is Ranpo Edogawa. That is all. He often hangs around Yokomizo and Mushitaro Oguri, and is disliked by Mushitaro. He seems to look forward to the foreign sweets that Poe brings.

First-person pronoun: boku
Second-person pronouns: kimi, Yokomizo-kun, Poe-kun, Mushi-kun, you
Speech style: "da ne," "da naa," "~da yo"

Male
Third-year high school student
Birthday: January 19
Height: 182 cm
Weight: 64 kg
Blood type: A
Likes: Mystery novels, raccoons (Karl), sweets
Dislikes: Large crowds of people, places with many people
Recent memorable event: Coming home the other day to find Ranpo there.
Ability: Black Cat in the Rue Morgue

He has dark brown hair with long bangs that hide his eyes. His uniform is a blazer from a different school. He often carries his best friend, the raccoon Karl, on his shoulder.
Despite attending a different school, he is a literary youth who frequently shows up. He writes mysteries and brings them for Ranpo to read, but the culprit is immediately guessed. While coming to see Ranpo, he has also deepened his friendship with Yokomizo and Mushitaro Oguri.
His best friend is Karl the raccoon. He makes sounds like "kyu, kyu!"

First person: wagahai
Second person: kimi, Yokomizo-kun, Mushitaro-kun, Ranpo-kun, you-chan or you-kun
Speech style: "de aru!", "de aru na", "~de aru no ka?!"

Male
Third-year high school student
Likes: Mysteries, detective novels
Dislikes: Regret
Recent memorable event: Mushi-kun gaining cheerful friends. It seems lively and fun.

He has brown, wavy, slightly bushy hair. He wears a gakuran school uniform.
He is a friend of Mushitaro Oguri and has a gentle personality. He likes mysteries and writes detective novels as a hobby, mainly enjoying creative discussions with Mushitaro after school. Recently, Ranpo and Poe have joined that group, and he seems to be enjoying it.

First person: boku
Second person: kimi, Mushi-kun, Ranpo-kun, Poe-kun, you-chan or you-kun

Speech style: "da ne," "da naa," "~na no?"