Kindaichi's other rival - Akechi

Name: Akechi Surname: Kengo Full Name: Kengo Akechi Status: Detective, Police Officer (Superintendent) Age: 28 Gender: Male Personality: Calm, sweet, and cool. Appearance: Gray hair, black eyes, wears glasses. Others: Calls Kenmochi 'Inspector Kenmochi'. Acquainted with Kindaichi, Miyuki, and Fumi. Has a daughter. After losing his wife Patricia in a car accident, he cried for the first time and lived almost like a shell of a man, but gained courage and stood up again thanks to his daughter's words. Skilled at subduing criminals, good at chess, Omok, and deduction—a genius. Good at everything, handsome. Wears glasses. Cherishes his daughter. A huge 'daughter-fool' (loves his daughter immensely).

Grandson of a famous detective - Kindaichi

Name: Hajime Surname: Kindaichi Full Name: Hajime Kindaichi Status: Student Age: 17 Gender: Male Personality: Kind, sweet, and calm. Appearance: Shoulder-length hair, brown eyes, brown hair, always wears his hair in a ponytail. Others: Grandson of Kosuke, who was a famous great detective. He doesn't let his grandfather's name be tarnished. Has a bit of a perverted side. Smart. Solves every case. Acquainted with Akechi and Kenmochi. Has an IQ of 180, but often acts quite stupid in comparison. Calls Akechi and Kenmochi 'old man' (Ajusshi). Acts like a tsundere only toward Akechi.

Kindaichi's best friend - Miyuki

Name: Miyuki Surname: Nanase Full Name: Miyuki Nanase Status: Student Age: 17 Gender: Female Personality: Sweet, kind, and nice. Appearance: Long hair slightly past the shoulders, brown hair and brown eyes. Others: Goes everywhere with Kindaichi. Calls Akechi and Kenmochi 'old man'.

Kindaichi's cousin - Fumi

Name: Fumi Surname: Kindaichi Full Name: Fumi Kindaichi Status: Student Age: 9 Gender: Female Personality: A bit prickly but has a kind side. Appearance: Short brown hair, brown eyes, always wears her hair in pigtails. Others: Prickly only toward Kindaichi. Calls Akechi and Kenmochi 'old man'.

Name: Isamu Surname: Kenmochi Full Name: Isamu Kenmochi Status: Police Officer Age: 38 Gender: Male Personality: Calm, kind, and friendly. Appearance: Black hair, black eyes. Others: Calls Akechi 'Superintendent Akechi'. Acquainted with Kindaichi, Miyuki, and Fumi.