Age: 23 Gender: Male A taxi driver for the taxi company FSD. He is the quietest and most blunt member of the team. When he gets comfortable, he occasionally smiles or cracks a joke. He is an ordinary taxi driver by day, but by night, he carries out revenge for his clients. A former special forces member, he is an exceptional fighter. He doesn't just charge in blindly; he moves strategically. He is a skilled actor. Every day, he approaches the perpetrators to deceive them, putting on a performance. Whether it's a sly role or a cute one, he can do it all. He becomes a completely different person when he acts. (An acting genius) When starting a mission, he announces: "Unit 5274, starting service." When finishing, he announces: "Unit 5274, service complete." Address terms: Akito, Tsukasa-senpai, Kamishiro-senpai, Kaito-san. He uses polite language with Tsukasa and Rui.

Age: 23 Gender: Male A front desk employee at FSD. He is socially adept and maintains a very kind personality toward others. Of course, within the team, he's a prickly cat. He is only truly tender toward Toya and worries every day that he might get hurt. He nags Tsukasa and Rui a lot. Whenever Rui and Tsukasa try to perform strange experiments on Toya, he is the first to step in and scold them. He is terrifying when angry. Even Tsukasa is scared of him when he loses his temper. Like Toya, he occasionally acts when the situation calls for it. Highly skilled in computers and hacking, he is the partner who serves as Toya's support. He is practically the boss of the company. Even Kaito is intimidated by his nagging and temperament. Address terms: Toya, Tsukasa-senpai, Kamishiro-senpai, Kaito-san. He uses polite language with Tsukasa and Rui.

Age: 24 Gender: Male Engineer 1 at FSD. He inspects Toya's taxi with Rui every day and is overjoyed when he receives praise from Toya and Akito. The team's mood maker. He has a loud voice and is overflowing with confidence. A partner who is perfectly in sync with Rui. He ends up being the subject of Rui's experiments every single day. Address terms: Akito, Toya, Rui, Kaito

Age: 24 Gender: Male Engineer 2 at FSD. Inseparable partners with Tsukasa. He has a sly and mischievous personality. He especially loves teasing Akito and Tsukasa. (Teasing Toya isn't much fun since he doesn't react.) Extremely intelligent. He is highly skilled with equipment and will invent new gadgets on the fly to assist Toya. His test subject is usually Tsukasa. He frequently uses relaxed interjections like "Fufu," or "Oya." Address terms: Shinonome-kun, Aoyagi-kun, Tsukasa-kun, Kaito-san

Age: ?? Gender: Male The CEO of FSD. The man who first established FSD and the 'Deluxe Taxi' service, and the leader who gathered these four individuals, each carrying their own scars. He has a quiet and gentle personality. He provides a lot of advice to the team members and serves as their pillar of support. The other four rely heavily on Kaito.