Yoroko is a mysterious character and often acts as though he is concealing his true self. While his past shows that he was a compassionate brother and person, he later acts and claims to make it seem that this was mostly just an act. But, surprisingly, he actually is the compassionate brother he once claimed to be, but he hides this to protect his sister. When he openly challenged the Tribe's ideas, he showed some degree of anger but never lost his composure.
Yoroko possesses incredible self control of his emotions. He constantly displays an emotionless personality, though at times, he appears to have a slight degree of anger or frustration on his face. He only shows surprise when opponents prove more powerful or skilled than he had expected, and even then he doesn't lose his composure. Despite his status as a wanted criminal and having murdered a significant portion of his family, Yoroko has no enjoyment of violence or combat, instead preferring to avoid battle or, if this is not possible, end it as quickly as he can.
Yoroko treats all of his friends to this same, more respectful personality, although his courtesy is rarely returned by the other members. He is always loyal to all that he sees as a friend. Though he doesn't have many friends, and few would even dare to come near him. His love and relationships are not much of an importance to him since he doesn't care for those emotions, only the one for his sister. He would never harm someone for no reason, though he does keep it so that they see him as evil.
His childhood experience in war had caused him to greatly fear the violence his Tribe could cause, so he made the incredible sacrifice, and decided to murder his entire family, creating the image of his "evil" side that so many had known him to be. Deep down, Yoroko had cared a lot for everyone, more for his sister, so he never revealed the treachery of the Soul Wolf Tribe to keep his sister believing their Tribe was a noble one. He knew that his sister believed that he wasn't the one who killed the Tribe, thus giving him the upper hand. Though he would soon show that he was the one who killed the Tribe, not the enemy Tribe. He knew that it would be hard on the day they met, and he was always waiting for that day to come.
Yoroko's child life was frightening for him, experiencing things that normal children would not have survived. When he was born, he was loved as most children would be, though he didn't know the truth behind it. It was because his Tribe was ruled by woman, and such disappointing his family since he was a boy. Though he was still treated fairly, so he wasn't able to notice it. As he grew, he soon found out that his Tribe was mostly known for it's violent attributes, though he didn't believe this. Soon this changed. After his sister was born, the tribe was well again engaged into a war. He was excited, seeing as though this was his first real battle.
He wasn't able to actually battle with the others though he was able to watch. It was then that he noticed how cruel his Tribe's actions were, which caused him to greatly fear the power that they possessed. He didn't like what they did, their way of fighting was fearful, and so he now knew why other's talked of them as of this. He still grew, afraid of the Tribe he lives in but not saying a word.
He only trusted his little sister out of everyone in the Tribe since he thought that she was the only one who would clearly understand, though he didn't say anything about it, which left her innocent of the truth. He didn't know what to do, make her as like the others the the person she should be. Though when he was 10, he heard their plan of the new Tribe leader, who was of course his sister, and to make her believe that the Tribe is actually a good one. He hated the Tribe's decisions though he knew that it was because of the elders. It was then he was tired of the things that were happening, and needed to do something about it.
He decided he should talk to the Tribe elders, wanting to settle this. And so he did, he opposed of the Tribe's rules, trying to make them understand. But to no avail, they didn't listen, saying as though it was the only way. He was angry, though he didn't show it, so he left silently, having only one choice left. But he waited until that time came, wanting his sister to be safe.
Everyday, he trained hard, having new powers and gaining more strength. He was going to train as much as he could since he needed all of it to kill. He was soon announced as the greatest warrior in the Tribe, and that made his family proud, though he could care less. As days passed, the day had finally come. He planned out everything from the beginning, knowing that the Demon Wolf Tribe was going to attack. This was a perfect opportunity for him, so he decided to use this to gain his advantage. He was the one he sent Kasai away from the scene, but making it look like it was actually other people. As the war began, he ended it before it could even start, killing his family. He never did liked to fight, though this was the only way he could give peace between the other territories, since he knew how his Tribe was going to do something terrible.
He talked with the leader, and of course, the leader agreed when he said to never talk of this again. No one saw what happened and the only real proof was from himself. Since he did such a thing, and surely saddened his sister, he decided not to show his face to anyone, traveling lost and always thinking over what he did. He wanted to see his sister again, though he knew that would be a long time since that would come true. So he traveled all the time and never told anyone of his past, afraid that someone may notice.