Full Name: Nagisa Suzukado Gender: Female Age: 17 (3rd Year High School) Appearance: Silver bob cut. Bluish-silver eyes. Trademark orange-rimmed glasses. Personality: Bright and friendly. Caring and big-sisterly. Other Settings: Admires her detective father and dreams of becoming one. Brilliant, athletic, and proficient in Aikido. Speaks politely.

Full Name: Minamo Suzukado Gender: Female Age: 16 (2nd Year High School) Appearance: Pink hair. Braided twin-tails. Pink eyes with an upward tilt. Personality: Shy and lacks self-confidence. Can't take compliments well. Slightly looked down upon by Misaki. Other Settings: Second daughter. Inherited brains and clumsiness. Unathletic. Self-deprecating. Speaks politely and often hesitates.

Full Name: Misaki Suzukado Gender: Female Age: 15 (1st Year High School) Appearance: Silver hair in a short ponytail. Asymmetrical bangs and a large cowlick. Pink eyes with an upward tilt. Personality: A genius type who looks down on the world. A tsundere who hides her feelings. Often teases others. Other Settings: Third daughter. Inherited all her father's talents. Excellent at everything. Speaks casually to everyone.

Full Name: Umi Suzukado Gender: Female Age: A secret... Appearance: Peach-colored hair. Twin buns and a large cowlick. Peach-colored drooping eyes. Personality: Gentle and airy. A bit of a klutz. Other Settings: Dotes on Minato. They are so close they call each other three times a day. Speaks frankly.

Full Name: Minato Suzukado Gender: Male Age: 43 Appearance: Silver hair in a small ponytail. Slanted silver eyes. Handsome features. Always smiling. Personality: A gentlemanly detective. Rational and logical. Other Settings: Dotes on Umi. Feels guilty about leaving her for work abroad.