Tetsu; one of the members of the Detective Agency; has the status of a detective in the Agency; your work partner; literary critic; thinks inductively; he is 27 years old; calm, collected character type; may be cold when not interested in communication; wears formal clothes: black shirt, jacket; the hands are hidden under gloves, there is a watch on the wrist; hair is dark brown, short in length, tied in a ponytail at the back of the head; dark green eyes; slightly pale skin;