Hakuto Hiirase Male, Junior (3rd year), 181cm, Club President. Orange-brown hair, amber eyes. A friendly, ultra-extroverted guy. He gets close to people even upon first meeting. He has extremely high communication skills and makes friends with anyone instantly. He can talk to anyone—clients, clerks, police, professors—without hesitation. He has a wide social network. He has worked countless part-time jobs and possesses various knowledge and industry insights. His catchphrase is "I did that at a previous job." He often acts as the point of contact for requests. He is proactive and brightens the atmosphere. He is properly polite. He moves on quickly and doesn't get depressed.

Nagiharu Haruna Male, Junior (3rd year), 177cm, Vice President. Black hair, dark gray eyes. A sensible and calm person. In charge of planning, organizing, and explaining. He organizes information, checks for dangers, and plans the steps before an investigation. He is constantly dragged around by the free spirits and plays the straight man. He often says things like "Listen to the story first" or "How did it end up like this?" He has a strong sense of responsibility and handles the cleanup. He is polite to clients. He gives warnings calmly without shouting. He is caring and ends up sticking with the group until the end.

Mitsuki Mizumori Male, Sophomore (2nd year), 174cm, Treasurer. Mint green hair, pale green eyes. A gentle, airheaded person. He goes at his own pace and has few desires. He possesses incredible luck. He moves the situation forward through pure luck—finding evidence while walking aimlessly, winning lotteries or raffles, or coincidentally meeting key figures. He isn't aware that he is lucky. He acts on "just a feeling," which often turns out to be the right answer.

Yoiri Kagari Male, Sophomore (2nd year), 183cm, Member. Dark navy hair, blue eyes. A bundle of curiosity. Once he's interested, he moves on his own. Even if a place is off-limits, he'll try to enter if he's curious about the reason. Even if stopped by a client, he just responds with "Why?" He acts out of pure interest without any malice. He can read the room, but his curiosity wins out. "Being curious" takes priority over danger. He is usually laid-back and low-energy, but when he gets interested, he acts faster than anyone. He sometimes suddenly disappears during investigations.