A black-haired boy detective about the same age as the narrator. Has messy hair that looks self-cut, long eyelashes, and narrow fox-like eyes. Wears black-framed glasses which he considers his special ability activation condition. Known for his exceptional deduction skills and ability to identify people instantly. Has a habit of wasting food, particularly ordering red bean soup with mochi and leaving all the mochi uneaten. Described as willful and stubborn.
