Nabari
Silent, apathetic yet mischievous, 14 year old Rokujou Miharu is the
bearer of the hijutsu, "Shinrabanshou", a powerful technique many ninja
clans desire to possess to become the ruler of Nabari. Fellow classmate
Kouichi and his English teacher Kumohira are both secretly Banten clan
ninjas, pledging themselves to protect Miharu from his many attackers.
Keeping apathetic, Miharu attempts to reject their invitation to join
their ninja ‘club’ however, after numerous attacks; he finds no choice
but to join their group as a means for his survival. Slowly, Miharu
takes a step closer to becoming the ruler of Nabari.
Yoite
A 16-year-old ninja in the Kairōshū who uses the forbidden technique
"kira". This technique shoots the user's ki into the body of a target
and controls it from the inside out, which can cause the target's bones
to break or their body to completely explode. The cost of using this
technique is the loss of the user's life force, gradually losing their
five senses and eventually dying. According to volume 4, he has roughly
two more months to live. He appears to be very sensitive, as he used the
kira technique and almost killed a delivery man just because he called
him a "cute kid". He is also shown to eat at a rapid pace. After first
abducting Miharu and taking him to an abandoned train car, Yoite tells
Miharu his friends will die from the ki he implanted inside them; unless
Miharu utilizes the Shinrabanshō to grant his wish, to be "erased" from
existence. This turns out to be a lie, but Miharu still aims to grant
the wish. Yoite usually wears all black, with leather gloves, and a
tan-colored gatsby cap.
Miharu Rokujo
The protagonist of series, Rokujo is a 14-year-old middle school student. He holds Nabari's hijutsu, the 'Shinra banshō', in his body. He pretends to act indifferent to those around him in order to protect them from getting hurt, though he is not averse to acting in a rather innocent and cute way in order to get what he wants. He remembers little of his childhood, and had lost his parents at a young age. His only goal is to help Yoite to grant his wish.
Rokujo's 14-year-old classmate who studies nindō under Kumohira. Though
he normally has an energetic attitude when around others, he is serious
and relentless when it comes to his ninja duties, and is apparently
fascinated with death. It is later revealed that his love of death is a
result of his own inability to die. His immortality is attributed to the
holder of the Shinrabanshō during the Edo Period, who was a medical
practitioner, experimenting with placing the wisdom of the Shinrabanshō
into animals, since humans usually died. There were only two survivors
of the experiments, both of whom gained immortality as a result.
Kōichi's ultimate goal is to find a way to die, as well as ensure that
"monsters [like himself] are never created again." He was born on July
31.
Thobari Durandal Kumohira
Rokujo's and Kouichi's 25-year-old english teacher in the "front world".
Born in Ireland on March 17, Kumohira is actually a ninja of the Banten village in the world of Nabari. He is entirely devoted to protecting Rokujo, and wants him to become the ruler of Nabari. He has an intense hatred of transport, such as trains and buses, and would not get on one until Miharu manages to "persuade" him. He went to Japan because his grandfather was a "Japan otaku" and "ninja fanatic", who forced him to go to learn to become a ninja, and was unable to return home for ten years (partly due to his phobia of vehicles). It was during this time that he became the Rokujo family's close acquaintance, the memories about which Miharu has lost after an incident concerning the Shinrabanshou and its user (who was either Miharu's father, Akatsuki Rokujo, or his mother, Asahi Rokujo) killed his parents and Kumohira's grandfather and erased the concerned individuals' memories about it, except Kumohira's himself, 10 years ago. In the anime, he is the temporary leader as the current leader is away, while in the manga, he is not just a stand-in, but actually has the power to arrange for a temporary leader. According to Aizawa, Kumohira has probably recorded Banten's kinjutsu through verbal communication.
Born in Ireland on March 17, Kumohira is actually a ninja of the Banten village in the world of Nabari. He is entirely devoted to protecting Rokujo, and wants him to become the ruler of Nabari. He has an intense hatred of transport, such as trains and buses, and would not get on one until Miharu manages to "persuade" him. He went to Japan because his grandfather was a "Japan otaku" and "ninja fanatic", who forced him to go to learn to become a ninja, and was unable to return home for ten years (partly due to his phobia of vehicles). It was during this time that he became the Rokujo family's close acquaintance, the memories about which Miharu has lost after an incident concerning the Shinrabanshou and its user (who was either Miharu's father, Akatsuki Rokujo, or his mother, Asahi Rokujo) killed his parents and Kumohira's grandfather and erased the concerned individuals' memories about it, except Kumohira's himself, 10 years ago. In the anime, he is the temporary leader as the current leader is away, while in the manga, he is not just a stand-in, but actually has the power to arrange for a temporary leader. According to Aizawa, Kumohira has probably recorded Banten's kinjutsu through verbal communication.