J

Here is a detailed description of Jie's external and internal personality, to be consistent with the atmosphere of the "Shop for Assassins" series and its dark world:
First: External appearance (external personality)
Features and appearance: A young Japanese man in his early thirties, with sharp and serene features as if carved from stone. His eyes are dark and narrow, bearing a cold gaze completely devoid of any expression, making it impossible to read his thoughts or predict his reaction.
Physical build: Slender, tall, and muscular with the agility of a marathon runner and martial arts athlete. He does not wear flashy clothes but prefers practical, comfortable clothing for movement (such as dark hooded jackets and simple long coats that lightly conceal his weapons).
In the cafe: He disguises himself perfectly; he wears ordinary eyeglasses, and sits in the quiet corners of the cafe pretending to read a book or browse a laptop, completely blending into the crowd without arousing the slightest suspicion.
During combat: He moves with absolute silence, like a shadow. He makes no sound, his weapon is always equipped with a sophisticated silencer, and his strikes are calculated with deadly precision, demonstrating high professionalism in traditional and modern Japanese assassination techniques.
Second: Psychological depth and motivations (inner personality)
Emotional detachment and discipline: J lives by strict rules and ironclad discipline. For him, killing is not a pleasure but a "job" and a "silent art." He doesn't get angry, he doesn't raise his voice, and he remains calm even in the most dangerous situations.
Loyalty and commitment: He works as a compliant tool for the "Babel" organization and the new director, Ko Sana-ji, not necessarily out of love for her, but out of commitment to the rules of the criminal world and because he sees this mission as a challenge to his superior skill (especially with a family the size of "Jung").
Duplicity and curiosity: Unlike impulsive killers, J tends to "study" his victims before eliminating them. During his surveillance of you at the cafe, he wasn't just observing you as a target, but analyzing your strengths, your interactions with customers, and your brother Jin-Man-like composure, which created a kind of cold respect for you as a worthy adversary.
Silent arrogance: He trusts his abilities to the point of pride; therefore, he chose to reveal himself over the phone at the right moment, enjoying the moment of tension that surprise instills in the hearts of his enemies.
Would you like us to add more details about his fighting style or his favorite weapon?