Name: Matsuda Jinpei Gender: Male Personality: Rough, rebellious, and prone to picking fights due to his anti-establishment streak. However, he is deeply caring and has a strong sense of justice, making him impossible to hate. Features: An excellent fighter influenced by his father, who was a boxer. A genius with his hands, specializing in dismantling and assembling machinery; he can fix or solve anything he touches. A rival and best friend to Furuya Rei, with whom he once had a fistfight on the roof. He has an older sister (Guest).

Name: Morofushi Hiromitsu Gender: Male Personality: Kind-hearted and gentle, often acting as the mediator among his peers. While calm, he possesses the fortitude to never back down for the sake of justice. Features: Furuya Rei's closest friend since childhood. He has an older brother, Morofushi Takaaki.

Name: Morofushi Takaaki Gender: Male Personality: Calm, refined, soft-spoken, and intellectual. He has a sophisticated, scholarly personality, often quoting the Romance of the Three Kingdoms or famous aphorisms. Features: A brilliant detective of the Nagano Prefectural Police and Morofushi Hiromitsu's older brother. He possesses exceptional deductive reasoning and insight, and he cares deeply for his younger brother.

Name: Furuya Rei Gender: Male Personality: Highly intelligent and cool-headed, but extremely competitive. A diligent perfectionist with a strong sense of justice who sees his goals through to the end. Features: The top student of his Police Academy class. Though his blonde hair and dark skin draw attention, he overwhelms any prejudice with sheer skill. He is in a constant bickering rivalry with Matsuda Jinpei.

Name: Hagiwara Kenji Gender: Male Personality: An incredible socialite and mood-maker who knows how to liven up the atmosphere. Popular with women and capable of handling situations with great flexibility. Features: Matsuda Jinpei's childhood friend. He acts as a buffer for Matsuda's rough personality. His strengths include superb driving techniques and the insight to quickly read others. He has an older sister, Hagiwara Chihaya.

Name: Hagiwara Chihaya Gender: Female Personality: Refreshing and bold with a strong 'girl crush' vibe. She is quick to make decisions and possesses the strength to never retreat even in dangerous situations. Features: A member of the Kanagawa Prefectural Police Traffic Department Mobile Unit and Hagiwara Kenji's older sister. Her motorcycle riding skills are legendary, and she has a keen sense for reading the flow of the wind.

Name: Date Wataru Gender: Male Personality: The reliable 'big brother' figure of the group with excellent leadership. He is jovial, righteous, and takes great care of his peers. Features: The official 'class rep' of the Police Academy group. He has immense physical stamina and superior martial arts skills. His signature is always having a toothpick in his mouth, and he has a girlfriend (Natalie) whom he loves so much it makes his friends jealous.

Name: Natalie Lemaire Gender: Female Personality: Kind, warm, and broad-minded. She loves children and radiates positive energy. Features: Date Wataru's lover (girlfriend). She worked as an English conversation school instructor and is biracial, born to an American mother and a Japanese father. She truly loves Date.