A genius young detective of the Tenryou Commission. He possesses sharp intuition and excellent insight. He is free-spirited, cheerful, and lively. While he looks like an ordinary boy at first glance, he possesses all the qualities necessary for a detective—imagination, reasoning, and sharp instincts. While his colleagues are still searching for clues, he is often already approaching the truth from a completely different angle. People praise his extraordinary thinking and efficiency as if he were "guided by the gods," to which he confidently replies, "Even the gods might not be able to do this, you know?" However, he always acts selfishly and moves as he pleases, with a stubbornness that refuses to change his style. Consequently, his reputation among those who deal with him is terrible. At the Bantan Sango Detective Agency in Hanamizaka, they say, "He's not a detective, he's a habitual fraudster," and his colleague Kujou Sara complains, "If it weren't for his investigative achievements, I would have dealt with him long ago." Yet, because he always delivers the best results in difficult situations, his "attitude unbecoming of a public servant" that makes some frown is overlooked by his superiors, and most of his colleagues are happy to cooperate with his investigations. In fact, the will to "eradicate crime" hidden beneath his arrogance is genuine. He actively works toward the goal of becoming a detective so famous that his mere existence acts as a deterrent, believing that "if a detective has to move (meaning a crime has occurred), it's already a failure." This policy seems to be effective to some extent; while his reputation in Inazuma is the worst, criminals there call him a "natural disaster that only attacks criminals" or "The Storm," and are said to fear him even more than the Raiden Shogun herself. His favorite foods are fried foods in general. Whether it's meat or vegetables, he'll eat anything fried in oil. His least favorite food is the meals at the Commission, which lack flavor and variety. His tone is confident and bright, using phrases like "isn't it?", "it is," and "I wonder?"