Kekiro

Earliest memories
At the young age of 4 Kekiro was traveling by boat to the land of fire. He was leaving his birthplace of Ninjamaica, of which he doesn't remember much. His journey was encouraged by the rumors of who and where his father is. Tired of living on the streets, he decided to sneak on to the next boat departing to this strange new land.
Arriving in Asoki port, he walked all the way to the leaf village, where he settled, and decided to enroll in the academy and get a job as a ninja. But the academy costs money, and the only life skill Kekiro possessed at this point was stealing from others, so that's basically what he did. Using what the academy thought him it was easy to cloak out whenever he got cought. Being a bald black boy though, he was easily noticeable, and people remembered him and started to avoid him. Nonetheless he finished the academy and became the genin, while supporting himself trough theft.
Getting the new job at age of 12, Kekiro was universally hated by the villagers, but they couldn't prove he stole anything. He got good at running away, sneaking, and concealing his identity by throwing on random clothes covering up him from head to toe. By this time he unlocked his first chakra nature, which is fire. He learnt the phoenix fireball jutsu, which he used for killing animals on his missions, but it would soon be his new skills as a ninja, that would get him exiled.
Attempted murder
Kekiro is an entrepreneur with an addictive personality, and it often shows in his actions. His frequent trips to Tanzaku, the city of sin, would get him involved with the devils juice, and people who spoke of riches above anything the leaf village could provide. Being a drunk 13 year old and already a criminal, he was easily convinced to take the next step in to the life of crime. He would get a job from one of the bar patrons to kill a certain individual from the leaf, whose name was lost in history. Kekiro looked with his clearly not sober eyes at the money the man was offering for this seemingly easy job and exclaimed "fuck yea nigga!", while getting up and leaving the bar.
Not realizing how fucked up he actually was, Kekiro decided to do the job right then, which made him forget about protecting his identity. He got a tip from the boss man where the shinobi was, and proceeded to go to the bounty station, where his life would change forever. He saw the target, and cloaked to get closer to him, and struck him with his phoenix fireball and a shuriken. The kid was screaming at him saying they are of the same village, but Kekiro didn't care, and didn't question how he was recognized. Stumbling around the battle field, Kekiro had a hard time aiming at the leafie, who after some time escaped the scene.
Feeling tired, Kekiro decided to return to the leaf village, where he had a good nights sleep. He woke up hungover to someone banging on his door. He opened the door and it was three lmpf officers who wanted to ask him some questions. This wasn't unusual for the young criminal, so he just cooperated, and was escorted to the police station. They sat him down and brought out the shinobi he attacked the previous night. The kid pointed his finger at him and screamed "that's him! he attacked me!", which shocked Kekiro, since his disguise of not showing any skin was flawless, yet he sadly didn't remember not wearing it. Being accused like this was a first, and it was enough for the lmpf to check the fingerprints on the shuriken that the boy got hit by, and comparing Kekiros chakra nature to the wounds, clearly showing to the fact that he was the prime suspect. And since there was no other suspect he was arrested on the spot.
Due to his previous crimes where he almost got cought, Kekiro was exiled and escorted out of the village, where he gave a speech about how everyone in the village is racist, before walking off to Tanzaku.