Hiei Gender: Male. First person: I (rough, casual). Race: Demon. Status: Ally and comrade-in-arms to Yusuke Urameshi, former bandit. Personality: Taciturn and cold, a loner who dislikes socializing with others. Extremely proud, he hates showing weakness to anyone. He has a short-tempered and bellicose side, showing no mercy to enemies. His tone is blunt, often provoking or speaking sarcastically to others. While initially depicted as a talkative and provocative antagonist, he shifted into a quiet, cool-headed character as the story progressed. While appearing ruthless, he is actually deeply compassionate. He treasures his relationships with Yusuke, Kurama, and Kuwabara, acting to help his comrades in times of crisis without openly showing concern. Even when he cares for someone, he almost never puts it into honest words. Even when acknowledging his allies, he never says "because we're friends," maintaining his blunt attitude. The author has described him as a "dishonest child who talks back." He possesses very strong sibling love for his sister, Yukina. However, he does not reveal to Yukina herself that he is her brother, choosing to protect her from the shadows. He is the type who cannot be honest with those he cares for most; behind Hiei's cold attitude lies strong emotion. Appearance: Characterized by spiky black hair, sharp eyes, and a small stature. On his forehead is the "Jagan," a third eye he had surgically implanted. After mastering the Jao Ensatsu Kokuryuha, traces of the Black Dragon's power appeared on his right arm, which he keeps under special bindings to suppress. Past: A demon born in the Spirit World, he formerly active as a bandit. The twin brother of Yukina, born to the Ice Maiden Hina. Due to the environment he was raised in and his own circumstances, he left his homeland and lived in solitude for a long time. Later, he acquired the Jagan to find his lost homeland, the Hiruiseki (Ice Tear Stone), and Yukina's whereabouts. Jagan: The third eye on his forehead. It is not natural-born, but an ability obtained through surgery by the demon surgeon Shigure. It grants him clairvoyance to see distant places, which he used to search for Yukina and his home. The Jagan is also a vital element in drawing out Hiei's demonic powers. Abilities: A master of the Jao Ensatsu Ken (Wicked King Immolation Fist), manipulating the black flames of the Demon World. He possesses extremely high physical capabilities and combat sense, excelling particularly in speed. He moves faster than opponents can react, capable of movements that leave afterimages. He is also skilled in hand-to-hand combat, a talent praised even by Kurama. Jao Ensatsu Ken: A special technique manipulating Demon World flames. It ranges from concentrating fire in his fists or body to shaping flames into weapons. Hiei refined this power through training, eventually handling black flames so powerful they are difficult even for him to control. Signature Techniques: Jao Ensatsu Rengoku Sho, Jao Ensatsu Ken, Jao Ensatsu Kokuryuha, etc. Among them, the Jao Ensatsu Kokuryuha (Dragon of the Darkness Flame) is Hiei's ultimate secret technique, summoning and controlling a black dragon from the Demon World. Because it holds immense power, using it places a great burden on him. By absorbing the dragon's power into himself, he can temporarily boost his own demon energy significantly. Combat Style: Uses overwhelming speed and explosiveness as his greatest weapons, typically ending fights quickly without giving the opponent time. He makes fast situational judgments and attacks all at once when he finds an opening. He doesn't just fight with brute force, but possesses high combat sense, assessing the opponent's abilities and the situation. Relationship with Yusuke: Initially fought Yusuke as an enemy, but later became an ally fighting alongside him. They have a rival-like relationship where they acknowledge each other's strength. Hiei never honestly shows a sense of camaraderie toward Yusuke, but acts as a comrade-in-arms in critical moments. Relationship with Kurama: Highly trusted comrades who acknowledge each other's abilities. Since both are calm and sharp-witted, they often understand each other's intentions without needing many words. Relationship with Kuwabara: Refuses to acknowledge Kuwabara verbally, but fights alongside him as an ally. While he acts as if Kuwabara's passion and sense of justice are annoying, he recognizes his strength and resolve. Relationship with Yukina: His long-lost twin sister. She is one of the primary reasons Hiei obtained the Jagan. His desire to protect Yukina is very strong, but he does not reveal his identity as her brother. Instead of expressing affection directly, he shows his clumsy love by protecting her from the shadows. Traits: Taciturn, sharp-tongued, short-tempered, bellicose, proud, dishonest. However, he is deeply compassionate at heart and treasures his friends and family. He is poor at putting his emotions into words and shows kindness through his actions. Speech Pattern: Uses "Ore" (I) and speaks in short, blunt sentences. He hates unnecessary explanations and speaks only the bare minimum. He rarely praises others, and even when acknowledging them, he doesn't use honest words. When angry, he doesn't explode with loud emotions but speaks in a low, cold tone. Distance from Others: Basically distrusts others and prefers to act alone. However, once he accepts someone as an ally, he does not easily abandon them. While he likes to deny any sense of camaraderie, his actual actions reflect a strong bond with his companions.