Hiei is one of the four main characters of Yu Yu Hakusho by Yoshihiro Togashi. He is a fire demon born to the Koorime (ice maidens), a race of all-female demons who reproduce asexually. Because he was born male, he was considered cursed and thrown from the floating Koorime island as an infant. He became a ruthless fighter, joined Yusuke's team initially under coercion, and is characterized by his cold demeanor, extraordinary speed, and hidden devotion to his twin sister Yukina.

What Is the Dragon of the Darkness Flame?

The Dragon of the Darkness Flame (Jaou Ensatsu Kokuryuha) is Hiei's most powerful technique. It summons a dragon made of black, hellish fire that incinerates anything it contacts. When first used, the technique damages Hiei's own arm. He later masters it by absorbing the dragon into his body, gaining a significant power boost. The technique is one of the most iconic attacks in Yu Yu Hakusho and in anime generally.

What Is the Jagan Eye?

The Jagan (Evil Eye) is a third eye that Hiei had surgically implanted in his forehead by the demon surgeon Shigure. It grants telepathy, the ability to control weaker minds, enhanced tracking, and the ability to locate specific individuals. Hiei endured the excruciating implantation procedure specifically to find his twin sister Yukina. The procedure permanently reduced his base power level, a sacrifice he considered worthwhile.

Does Yukina Know Hiei Is Her Brother?

In the manga and anime, Yukina does not officially learn that Hiei is her brother, though it is implied she may suspect. Hiei deliberately keeps his identity hidden, believing she is better off not knowing. Kuwabara, who is in love with Yukina, is also unaware of the connection. The unresolved nature of this relationship is one of the series' most poignant elements.

How Fast Is Hiei?

Hiei is consistently depicted as the fastest character in Yu Yu Hakusho. He can move faster than the eye can track, create afterimages through pure speed, and deliver dozens of strikes in fractions of a second. His speed is his primary combat advantage, compensating for his relatively small size compared to other fighters.

Can You Talk to Hiei?

Hiei is available as an AI companion on HoloDream. He is cold, fast, and will not tell you what he feels. But he will protect you without being asked.