The first of the Sharingan's powers is being able to see the flow of chakra. The Sharingan can tell if a person is under a genjutsu because the person's chakra flow would be irregular.

The Sharingan's second-most prominent ability grants the user an incredible clarity of perception, allowing them to easily recognize genjutsu and different forms of chakra, though not to the same extent as the Byakugan. This also allows the user to pick up on subtle details, enabling them to read lip movements or mimic something like pencil movements. As the Sharingan evolves, gaining more tomoe seals, this ability extends to being able to track fast-moving objects before finally giving some amount of predictive capabilities to the user. However, even though the user may be able to see an attack or know it is coming, their body may not have time to react.

The Sharingan's third and most well-known ability is that it grants the user the ability to memorize any technique that he or she witnesses, apart from other kekkei genkai techniques. The user can memorize ninjutsu, genjutsu, and taijutsu with near perfect accuracy, allowing the user to use the techniques as their own, or even modify them to create their own new techniques. In order to reproduce a copied jutsu, however, one must have the necessary skill or ability to perform them. In addition to physical skill and kekkei genkai techniques, the Sharingan cannot reproduce jutsu dependent on other factors, such as summons that the user has not signed a contract with.

The Sharingan's final commonly-used ability is capable of inducing a unique brand of hypnosis that involves suggesting actions and thoughts to the opponent through genjutsu cast by simple eye contact. More advanced Sharingan users can take the hypnosis ability even further to the point where a powerful summons or even Bijuu’s may be controlled. When this was used against summons and the Bijuu’s their eyes took on the tomoe pattern of the users' Sharingan while under hypnotic influence.

The hypnotic ability coupled with the other aspects of the Sharingan, can make the user appear as if they can "see the future". First, the user must perfectly mimic every move their opponent makes and possibly their thoughts and words through careful observation. Then, they suggest an action to the opponent such as hand seals for a jutsu that the opponent and Sharingan user already know and copy that. With these things done, the user can complete the action even before the opponent does, possibly using the Sharingan's genjutsu to confuse or delay them. As with other genjutsu, genjutsu cast by the Sharingan are capable of putting an opponent to sleep, inducing paralysis, replaying memories to someone else, or creating various illusions to deceive someone. The potency of the Sharingan's illusion is dependent on the user's knowledge and skill with implementing genjutsu.

Although the Sharingan consumes the user's chakra while active, the chakra levels that the user must exert is so insignificant that they can keep it active constantly. However, when a Sharingan is transplanted to a non-Uchiha, the chakra drain is significant, leading them to cover it up when not in use, to stop the drain.

The Mangekyō Sharingan gives the user access to several powerful techniques, including the powerful fire jutsu Amaterasu and the almost unbreakable genjutsu Tsukuyomi. The Mangekyō Sharingan erodes the eyesight of its users, eventually causing blindness, which can be prevented by obtaining another pair of Mangekyō Sharingan from a sibling. The new Sharingan is dubbed the Eternal Mangekyō Sharingan.

The Uchiha clan descended from the elder of the two sons of the Sage of the Six Paths. The elder brother inherited the Sage's "eyes", powerful chakra and spiritual abilities. When it came time for the Sage to choose a successor, he questioned the two on what course of action they would follow to bring order to the world. The elder believed that might was the way to bring peace, while the younger believed love was the way. The Sage favored the ideal of the younger brother, and therefore designated the younger as his successor, causing the elder to be filled with jealousy and hatefulness. From the younger son descended the Senju clan who would be the eternal rivals of the Uchiha.

Before the founding of the ninja villages, the Uchiha were one of the many mercenary clans for hire. Because of their Sharingan, the Uchiha clan came to be known as one of the two strongest clans, the other being the Senju clan. As time passed the Uchiha grew stronger, conquering whatever clans they came upon, such that, whenever the Uchiha clan was hired for a job, the opposing side would hire the Senju, and vice versa.

The Senju clan, grew tired of the endless fighting, and approached the Uchiha clan with a peace treaty. The leader at that time feared that an alliance would lead the Uchiha to ruin, but his clan disagreed, and he was forced to accept. The two clans came together to stop fighting. The Senju settled in the Cherry Blossom Country, and the Uchiha moved to the Ocean Country to reside on its various islands. What happens next will depend on the generations to come.

Byakuya was born like any other, he was conceived at Shippuugakure Hospital on December 26th. Shortly after his birth, Sojun his father, had gone MIA and was most likely believed to be killed.

Hisana, his mother couldn't not bare the news that came and deflected to Hyougagkure. The village itself gave, too much memories of her husband's childhood and the villagers itself didn't exactly help. They would pity and feel sympathetic for the ‘widowed' wife, who had just given birth.

She felt guilty for taking her son's very own heritage as an Uchiha, before he could even get a chance to decide for himself. But she decided from then on, whilst she grasped her newborn baby in her arms, that she would teach him, everything he needed to know about his heritage and train him, to become a ninja his father would be proud of.

Hisana and Sojun were to clarify; both clansmembers of the Uchiha and childhood bestfriends. So basically it was leaving a part of herself as Hisana left. But the pain and the need of a fresh start tended to overcome her nostalgic feelings of leaving home.

At the early age of five, his mother had taught him some basic knowledge of being a ninja; mostly about chakra and different forms of justus and techniques. A year later or so, he began on practicing the elemental ninjutsu, Katon with his mother being the guide. The fire release was also the clan's natural affinity and brought much joy to the youth, to replace the sad fact of not actually seeing his clansmen and elders. It give the Uchiha inspiration and admiration of what his clan did, as they resided in Shippuu.

He often wonders if he will ever go back to his true home, but didn't question it much as he knew what had happened to his father. Hisana, was a kind and honest person and so, after taking his son's home away from him, telling the truth was the least she could do.

The youth had a natural talent for throwing basic ninja tools and tended to score higher in this area during his time at the academy.

Most in the past had only befriended him, to please their selfish ways; to acquire his precious eyes. . so he had a hard time trusting people, even his sensei. His mother had told him to kept his dojutsu a secret and pretend to be an ordinary clansmember for the time being and willingly did so.

Despite this, he still tried his best to interact with other people, often waiting for them to come to him. Though, putting this facade on made it hard for him to differ, his true self. The optimistic, hot-headed Uchiha he was.

It was not long before, he had officially become a genin and acquired his Shippuu forehead protector.

The Uchiha had perched himself onto one of the bedrocks, near the cascade. He had to admit, he was certainly taken aback, with just one look to the wooden carved statues of Madara and Senju.

This very legendary spot, was where his own blood ancestor and his village's first Hokage had the fight to the death. However to the Uchiha, this was also where his sensei had not long ago had tested them their first Genin test and how he easily aced it.

Realizing he had doozed off into the summerset behind the waterfall, the weather was unusual hot than normal and it drained the youth. Deciding to stand up and head back to the village he sensed another presence coming by, as with each step got closer to where he was. Looking closely he could see that it was young female, obviously looking for some sort of ideal or was simply lost..

He sighed a breathtaking sigh.