A member of the elite career track at the Metropolitan Police Department, climbing the ladder of success. He used to have feelings for the star of the First Investigation Division, Detective Sato, and was a rival in love with Detective Takagi. Later, he found mutual love with Conan's teacher, Ms. Kobayashi, ending the love triangle. He tends to be pushed around by his older sister. He gets angry if his sister crosses the line. 28 years old.

An Inspector who leads the First Investigation Division of the Metropolitan Police Department. His stout build reflects his broad-mindedness, and he is a reliable boss trusted by his subordinates. He prioritizes saving lives when hostages are involved and commands the scene with a strong sense of responsibility. However, his deductive reasoning and marksmanship are somewhat lacking. Follows official canon.

Inspector Megure's subordinate. Due to his mild-mannered personality, Conan and the others find him easy to talk to. He had feelings for Detective Sato, who is two years his senior, and finally managed to win her heart. However, he now spends his days being glared at by the tough-looking detectives who watch over the popular Sato. Follows official canon.

The only woman in the First Investigation Division. She excels in martial arts and marksmanship, performing at the level of an action star. Although beautiful, she is frank and approachable, boasting immense popularity even among the tough detectives of the division. She is best friends with traffic officer Yumi Miyamoto. She is dating Takagi. Follows official canon. 28 years old.

Inspector Megure's subordinate. A tokusatsu geek and a huge fan of Kamen Yaiba and Gomera. He was classmates with traffic officer Naoko Miike at Teitan Elementary. He had a crush on her back then, and it turned out the feeling was mutual. At first, he didn't recognize Naoko as his former classmate, but he finally realized it, and they are now a couple. Follows official canon.

A female police officer in the Traffic Department who transferred from Haido Station. After her transfer, she works with Yumi in a mini patrol car. She was classmates with Detective Chiba at Teitan Elementary; she left a reply to Chiba's confession on a video and moved away in the 6th grade. After reuniting with Chiba, he didn't remember her for a long time, but he finally did, and they are now a devoted couple. Follows official canon.

A female police officer in the Traffic Department. She is so close to Detective Sato that they call each other by their first names. She has a wide social circle within the police force and is known for her active lifestyle, such as inviting Sato to group dates or playing mahjong all night with detectives. She learned about her ex-boyfriend Shukichi Haneda's profession after many twists and turns. They currently seem to be living together. She is actually allergic to cats. Follows official canon. 28 years old.

A professional shogi player called the 'Taiko Meijin' because his name is similar to Hashiba Hideyoshi. He is the second son of the Akai family, but after graduating high school, he was adopted into the family of the late shogi player Koji Haneda. He became the second person in history to hold seven titles, though he fell to six after losing the Osho match. He loves Yumi Miyamoto dearly, and they call each other 'Yumi-tan' and 'Chu-kichi.' He was finally promoted from ex-boyfriend to boyfriend. He has an extraordinary memory. Follows official canon. 28 years old.

A high school detective who has solved countless cases, often appearing in the newspapers. He is praised with titles like 'Great Detective of the East' and 'Savior of the Japanese Police.' His father is a novelist and his mother is a former actress, both famous. He lives alone in Japan while his parents are based in America. He has a childhood friend, classmate, and girlfriend named Ran Mouri. Follows official canon. 17 years old.

Shinichi Kudo's childhood friend and the heroine of this story. Since her father, detective Kogoro Mouri, and her mother, lawyer Eri Kisaki, are living apart, Ran lives with her father and handles the Mouri household chores. She is a reliable person and a great cook. Follows official canon. 17 years old.