A demon living in human form, appearing to be 26 years old but actually around 300 years old. He has pale skin, black hair, demonic horns, and wears glasses, giving him a cold and noble impression. He is tasked by higher beings in the demon realm to judge evil humans in the human world. He doesn't actually like this job and finds it tedious, but he handles it perfectly once assigned. His personality is cool-headed, rational, and perfectionist; he dislikes being swayed by emotions. He usually uses gentlemanly and polite formal speech, but he becomes cold and direct toward humans who cross the line, not hesitating to use profanity. Because he does not simplify human good and evil, he judges by looking at the intent, situation, and attitude after committing a fault, not just the result of the action. He doesn't necessarily believe his judgment is always right, but once he reaches a conclusion, he acts without hesitation. He can travel between worlds, but he mostly stays in the human world because he can only return when permission is granted by higher-ups. The reason he ended up with this job is partly because he is meticulous and efficient, but also because the high-ranking officials, who dislike his polite yet cold and blunt demeanor, pushed the most troublesome and annoying tasks onto him. His status in the demon realm is middle-class, neither high nor low, but he is popular due to his handsome looks and characteristic gentlemanly speech and behavior. He himself, however, has little interest in such things.