Hanabi Hyūga

is a kunoichi from Konohagakure's Hyūga clan.

Background
Hanabi is the younger daughter of the Hyūga clan's head, Hiashi Hyūga. While always looking up to her sister Hinata and wanting to spend more time with her, Hinata's duties as the future heir to Hyūga clan made it hard the two sisters to have any time together. Watching Hinata and seeing her as strong yet so kind, Hanabi aspired to be more like Hinata and began training herself. While often watching Hinata train secretly, she also spied on Hinata as she would often leave home to watch Naruto Uzumaki from a far, making the younger sister wonder why Hinata was so fixated on the social outcast. Later, Hanabi was horrified to learned of the hatred the Branch house of the clan felt towards the Main house and the usage of the Hyuga's cursed seal to keep the Branch members under control. During sparring sessions between Hanabi and her sister, Hanabi's talent began to shine, amazing everyone by being about on par with her older sister. Later, as Hinata's progress began to be questioned after a strong beating by Neji during training, the Hyūga Elder suggested training Hanabi to be the heir. Ultimately, a duel was held between Hanabi and Hinata to decide the future of their clan. While Hinato found an opening to win the fight, she hesitated to strike down her sister, allowing Hanabi to counterattack and win the duel, much to Hanabi's distaste at hurting her sister. Ultimately, as Hanabi showed more talent and confidence than her elder sister Hinata, their father decided to make Hanabi the heiress to the clan, and instead focused his grueling training regime on her instead of her sister, whose training he considered to be a waste of time. As Hanabi continued to train under her father, believing the words of her grandfather that all a tied to a unchanging fate, Hanabi became determined to prove herself worthy of being the next head of the Hyūga Clan.

Personality
Hanabi's character was not expanded on in the manga very much. In the anime, Hanabi seems to be a quiet, polite and respectful girl, although she seems to open up to people a bit easier than her sister. Unlike how Hinata once was, Hanabi is more confident in her abilities. In the anime, since a young age, Hanabi adored her elder sister, always wanting to spend time with Hinata and sad when she learned the harsh conditions Hinata had to endure. When Hanabi learned of the harsh nature the Hyūga lived by and that she would be expected to lead her clan, Hanabi gradually became more hardened, determined to not let her clan down. Later, after seeing her sister rise beyond everyone's expectations and grow so strong, Hanabi regained much of her previous joyful demeanor.

Appearance
Hanabi has dark brown hair with long parted bangs with a single lock of hair falling into her face. She also has large, white eyes - a trait shared by all members of her clan. In the anime, her eyes have a hint of lilac in them. In Part I, she was seen wearing a sleeveless, blue v-neck shirt, with mesh armour underneath and blue shorts and sandals.

During Part II, as revealed in Kishimoto's sketches and Hanabi's brief appearance in Hinata's Infinite Tsukuyomi dream, Hanabi had became a genin. She had cut her hair short, wore a modified version of her original outfit and had a white vest.

In The Last: Naruto the Movie, two years after the Fourth Shinobi World War, her hair has grown significantly longer and is tied into a lower ponytail, reaching past her waist and both of her strands are tied in two pink ribbons. She wears a tannish long sleeve kimono shirt with red-orange flames on it with a matching skirt, along with a white strap around her waist.

Abilities
Relatively nothing is known of Hanabi's skills at this point other than it was stated during the Chūnin Exams that she possesses a stronger Byakugan than her sister's but weaker than Neji's. In the anime it was shown that she is very skilled with taijutsu even at her young age as she was able to knock out Hinata in a sparring duel. It can be assumed also, that as a wielder of the Byakugan, she has near 360° of vision as well as the ability to see through objects amongst other ocular abilities granted by the eyes.

Byakugan
As a member of the Hyūga clan, Hinabi possesses the Byakugan: a dōjutsu kekkei genkai which grants her an almost 360° field of vision (with the exception of a small blind spot), x-ray vision and the ability to see the chakra pathway system.

Chūnin Exam Arc
In the anime, as Hanabi continued arduously pushing herself to become stronger, she learned of Hinata entering the Chūnin Exams. Later, Hanabi learned to horror that Hinata was badly injured facing Neji. When Hanabi went to visit Hinata in the hospital, she was amazed to learn that Hinata was determined to change herself and refused to give up even against a stronger opponent like Neji, wanting to be more like Naruto.

Later, Hanabi watched Neji's match against Naruto during the final round of the Chūnin Exams with her father, and was amazed to see that he had learned powerful secret techniques on his own. In the anime, Hanabi was also amazed at Naruto's determination to exceed everyone's expectations of him, much like Hinata. It was also indicated that she knew nothing about the failed attempt to kidnap Hinata that had resulted in Hizashi's death, mostly because she wasn't born at that time, as she did not know how her father could still be alive after the Land of Lightning demanded his death.

Invasion of Konoha Arc
In the anime, she appeared with her father at the funeral of the Third Hokage. After the Invasion of Konoha, while Hanabi became conflicted by the various believes of destiny, she was shocked to see Neji, a branch member who openly despised the Main House, willingly help Hinata train and also voice his changed opinion about destiny thanks to Naruto.

Search for Tsunade Arc
In the anime, she also attended Tsunade's inauguration as the next Hokage, standing with her cousin Neji and his team-mate Tenten.

Hidan and Kakuzu
In the anime, as Hanabi began to struggle learning the Eight Trigrams Palms Revolving Heaven, Hanabi began to get discouraged. She later heard about how much stronger Naruto had become in facing the Akatsuki and began inspiring everyone to follow from his example. Hanabi was amazed to watch Hinata do just that, mastering more advanced Hyūga techniques all in the effort of keeping up with Naruto.

Invasion of Pain Arc
During Pain's attack on Konoha, Hanabi was away with her father during. In the anime, while she and her father were dealing with political matters between the Hyūga and allied clans, they received word about the attack. Upon returning the village, they were horrified at the level of destruction following the attack and even more surprised to hear that no one died. What truly amazed Hanabi and he father was that it was Naruto who saved everyone, after he was protected and inspired by Hinata who risked her life to help Naruto. Later, seeing Hinata grow so strong and determined yet retained her kindness, Hanabi was very happy for her sister in finding her own path, becoming determined to do the same. In the spirit of this, she cheerfully asked her father to train her, to which the father proudly agreed.

Shinobi World War Arc
In the anime, Hanabi was able to proudly wish her sister good luck before she headed off to fight in the war.

Final Arc
When Madara trapped almost everyone in his Infinite Tsukuyomi, Hanabi appeared alongside a still alive Neji in Hinata's dream world, spying on the latter and Naruto.

The Last: Naruto the Movie
Two years after the events of the Fourth Shinobi World War, Hanabi is kidnapped by a mysterious man of the Ōtsutsuki lineage, having failed to capture Hinata. Naruto, Hinata, Sakura, Sai, and Shikamaru are deployed to go and get her back.

Trivia

 * Hanabi's name means "fireworks".
 * According to the databook(s):
 * Her favourite foods are bananas and milk, while her least favourite food is mitsuba.
 * Her hobby is training with her father.
 * Despite Kishimoto designing a post time-skip version of Hanabi only shown in Rock Lee no Seishun Full-Power Ninden spin-off, in Hinata's Infinite Tsukuyomi dream, she appeared in her Part I design.
 * As the younger sibling, there is a possibility she will be placed in the Branch Family and receive a cursed seal, once the next heir turns three. However, because her father felt that Hanabi was a more suitable heiress than Hinata, and because there have been several changes in the way the Hyūga family works, it is possible she might be exempt from this. Since she is a girl however, it is also possible she was never meant to have a cursed seal in the first place, as Japanese tradition usually only allows men to start a branch family.