Hikari Uchiha

or in the previous timeline, was a kunoichi of the Uchiha clan during the Warring States Period. Because of her extraordinary abilities, Nanashi was treated as nothing more than a weapon by her own clan and was almost always locked away in a cell, only being called out for battle. She was ultimately sealed away by the combined efforts of the Senju and Sarutobi clans. She was released almost a century later by Merz to be used as his tool for war, using Nanashi's hatred of shinobi and the world alike to gain her trust. Due to the efforts of Boruto Uzumaki and Toneri Ōtsutsuki, her fate with Zero was reverted.
== Background ==
She was originally born as "Hikari Uchiha" by her parents, who wished her to live her life in the sunshine as much as possible, hence her name. However, her parents were killed at some point during the vicious Warring States Period, leaving her orphaned. Once her fellow Uchiha clan members discovered Nanashi's powerful abilities, they decided to use her as a weapon for battle, telling her only purpose was to serve them in battle, and gave her the name "Nanashi" to signify her lack of identity as a human being. For several years, Nanashi was kept locked away by her own clansmen, being treated as a weapon, often being referred only as "it" by others. Ultimately, however, during a battle against the Senju clan, Nanashi's power forced them to retreat, only for them to return with assistance from the Sarutobi clan, who managed to defeat the Uchiha and seal Nanashi away underground, preventing her from being used again for battle.
== Personality ==
Because of the extreme mistreatment she suffered at the hands of her own clan, being treated as nothing more than a weapon, not even being referred to as a human being, but only as an object, Nanashi developed a deep hate for not only her own clan, but shinobi as a whole, along with reality itself. As a result, Nanashi eagerly accepted Merz's offer to bring chaos to the world in order to gain her revenge upon shinobi. 
When she posed as the guide for Ninja Heroes, she seems to act robotic and unnatural to everyone except Boruto, where she will act and talk more human and natural, using systematic words and being polite, When she does it, she will only talk about what's happening in the virtual shinobi world and the Ninja Heroes, never talking about anything. When asked about the events, she states that there are no events at this time. and if asked where to start, she states that all beginners must read the manual page 13 before playing. She won't express herself, either via poses or facial expressions, She will drop that facade when confronted about what it actually is, being a Zero supporter, and that there are many things pointing at her.
Upon meeting Boruto Uzumaki in the virtual game world she created, Nanashi began having conflicting feelings; while initially annoyed with Boruto's persistence to talk to her and impress her, she gradually found him interesting and different from others, who only talked to her as part of her duties as a "guide" for the game, whereas Boruto genuinely wished to become her friend.
Nanashi still struggled to let go of her hatred, and began suffering from great emotional turmoil over her feelings of hate against her feelings of joy regarding Boruto, but still went ahead with her plans, although she unknowingly caused herself great harm as she subconsciously wished to keep Boruto safe from her own plans. When clashing against Boruto, Nanashi was unable to bring herself to kill him, shedding tears and pleading for Boruto to stay away, but due to Boruto's unwavering determination to rescue her from her hatred, she ultimately came to accept his feelings and granted him her chakra to help defeat Merz, although at the cost of her own life. 
After Boruto travelled back in time to the Warring States Period with the help of Toneri Ōtsutsuki, Nanashi was once again saved by Boruto, this time from her own clan, and after seeing just how Boruto was determined to save her, and hearing his words about choosing her own path instead of accepting one made from others, she decided to live the rest of her life unaligned with any clan, and with her birthname, Hikari Uchiha, returned to her by Boruto, she lived a modest life surrounded by people who cherished her, and while refusing to speak about her tragic past, Hikari would only, and happily, talk about meeting Boruto and how her life was influenced by him, leaving an anecdote behind, thanking him for changing her life for the better.
== Appearance ==
Hikari has black eyes and spiky black hair with a blue tint which reached past her shoulder blades and secured by an orange headband. She wears a black cropped turtleneck and matching capri leggings underneath a blue coat with darker outline, brown belt with silver buckle, dark brown, fingerless gloves, and black boots.
While posing as the guide in Ninja Heroes, she sports turquoise eyes and blonde hair. Her coat is salmon coloured with darker flower patterns and exposed a portion of her abdomen while her boots shared same colour as her fingerless gloves. She also wears pink shorts with darker waistband.
== Abilities ==
Hikari was considered immensely powerful by her own clan, to the point that the Uchiha wielded her as a weapon. The Sarutobi and Senju clans, not formally allied at this point, banded together for the sake of sealing Nanashi away. While confronting Boruto, Mitsuki, and Sarada in Ninja Heroes, she overwhelmed them with her strength; despite the three each being prodigies of noticeable skill. Nanashi possessed enough chakra reserves that, when her power was fully unleashed, it manifested visibly.
=== Ninjutsu ===
==== Nature Transformation ====
Hikari possessed the natural Uchiha disposition for the Fire Release chakra nature. Born and raised in the Warring States Era, Nanashi was able to use complex nature transformation jutsu at a young age, including the Uchiha's rite of passage technique - the Fire Release: Great Fireball Technique. Her skill in Fire Release allowed her to utilise the Fire Release: Great Dragon Fire Technique, its multiple variation, and even Fire Release: Great Fire Annihilation, the pinnacle of the Uchiha clan's Fire Release.
=== Dōjutsu ===
==== Sharingan ====
Despite her youth, Hikari possessed a fully matured Sharingan. She had immense skill in genjutsu, able to manipulate the genjutsu world of Ninja Heroes easily, comparing herself to a "wizard" in the space of her genjutsu.
==== Mangekyō Sharingan ====
Beyond her Sharingan, Hikari awakened the Mangekyō Sharingan, a feat at this point achieved only by Madara and Izuna in their clan. She had the abilities Tsukuyomi and Amaterasu implanted into her eyes, and was able to utilise the Engraved Tsukuyomi through her Mangekyō Sharingan as well. While she was skilled in the use of Amaterasu, the strain of the technique took its toll on her eyes. Furthermore, Hikari showed the capability to manipulate the shape of the black flames, such as taking a swirling vortex to protect Boruto. Additionally, she had a powerful unique genjutsu, the Yachihoko. It allowed her to control others by erasing their memories and implanting powerful orders in their minds. Additionally, it gave her full access to their chakra, allowing her to transport it as needed.
== Plot Overview ==
Nanashi remained sealed away for the duration of the Warring States Period, and throughout each of the Shinobi World Wars, well into the modern era, where she was unsealed by Merz and Teguse, of Zero. Manipulating Nanashi's hatred for the shinobi world, he promised her revenge by plunging the world into anarchy. Nanashi, who was already immersed in hatred, accepted his offer and began to work with Zero.
Initially appearing as a guide character in the game "Ninja Heroes", Nanashi met Boruto Uzumaki. They did not get along, as Nanashi found Boruto's energy to be irksome. Regardless, she humoured him, and helped Boruto through the initial stages of the game. While doing this, she began to realise what kind of person Boruto was.
During the setting for a special event, where Kiseki were gathered, Nanashi initially tried to discourage Boruto from participating. However, after he did, and won a 'winner' Kiseki, Nanashi walked away and had to set Zero's plan into action, utilising the Engraved Tsukuyomi to place the entire shinobi world under her mark. She then used Yachihoko to begin erasing the memories of everyone affected, and force them to prepare for the Fifth Shinobi World War. 
Eventually, Nanashi was confronted by Boruto in Ninja Heroes, and when finally called out on her part in the chaos, Nanashi dropped her facade,told the truth and revealed her true appearance and face, fighting Team 7 within her genjutsu. Having been fought off, Nanashi returned to Zero, and no longer wished to monitor the Genjutsu World of Ninja Heroes.
After Yachihoko and its effects were broken by the efforts of Team 7 and Toneri Ōtsutsuki, Nanashi was confronted by Boruto in Zero's hideout. Desperate to realise her dream and her plans, she fought against Boruto, who managed to break through to Nanashi, appealing to the good within her heart. Releasing that she cared for Boruto, Nanashi surrended. Because of her weakness, Teguse and Zero implemented their control device over Nanashi, forcing her to fight Boruto at full power. Naruto Uzumaki and Sasuke Uchiha intervened, saving Boruto.
Merz discarded Nanashi, and began to fight Naruto and Sasuke. Nanashi, however, used Yachihoko to give Boruto all of her gathered chakra, allowing Boruto to fight alongside his father and teacher and defeat Merz's Complete Body: Susanoo. She then died in Boruto's arms, imparting on him a Kiseki that had their combined memories and chakra.
When Boruto travelled back in time to the Warring States Period with the help of Toneri, Nanashi's history was changed when Boruto rescued her from captivity. She fought alongside Boruto against her clan, earning her freedom with his help. Getting her to safety, Nanashi learned her true name, Hikari Uchiha, from Boruto. Hikari was able to live a modest and normal life away from war, and spent the rest of her life in gratitude to Boruto, even leaving an anecdote behind sharing how much he changed her life for the better.
== Trivia ==
* means "nameless" while her birth name means "light".
* While not part of the main storyline, Hikari has the greatest number of distinct Mangekyō techniques wielded by a single person.
ru:Нанаши Учиха
pt-br:Nanashi Uchiha
pl:Nanashi Uchiha