Once there was a boy without honor. His mother and father had honor, but they died for it. He had no family, no one to each him what honor was. He died at the hand of the only person to whom he had ever reached out only to be revived by the reincarnation of the person who had killed. him. She had taught him to love, to trust and have honor. He tried saving her, but that did not impress her. He tried to dying for her, but she want him to live for her. He tried to send her away so that she would never be hurt by the monsters that wanted to kill him or take the jewel. She would not be sent away. She would stay with through attacks by his brother, through the revival of the undead miko, through the rise of Naraku, through the release of the demon,through the battle to master the sword She had taught him what honor was. It was the struggle to do the right thing in the face of insurmountable odds. It was staying true to a promise made to another. It was sacrificing everything for the love of another. In the end he had saved the girl and redeemed his honor. Just when it seemed that he was to be rewarded for his devotion, Kagome was ripped from him and with her gone, his honor was lost.
Once there was a demon who thought that honor was everything. He thought honor was power. If he had enough power then his honor would be fulfilled. But the father of this demon denied him the power that he craved.. He searched the world for the power that he had been denied. He became outraged that the power that he desired had been given to his brother. He tried to take the power back from his brother and failed. In his failure, he learned some things of value have nothing to do with power. Later, he learned that compassion for others and that the life of the one you love is worth more than power. Finally, he was able to give up his quest for power. His honor was restored and his true power was granted to him. Just when he had achieved his tai-youkai weapon he took his brother's intended as a thief in the night as his mate and so his honor was lost.
Once there was a girl who fell into a well and met a hanyou. Her love and friendship helped destroy the great evil that threatened to destroy the world. She had sacrificed her home, her family and her world for him. She had promised to stay with her hanyou forever, but just when she had returned to keep her promise, she gave her heart to another and broke the promise to her intended and so her honor was lost.
Once there was a god who had been banished from the sky by his sister. He would do anything to interfere with her sister's plans. He could not help himself changing the time of the tai-youkai being mated to the miko so that he could play with the hanyou. The despondent hanyou had been his perfect plaything when he set him on course to meet Nobunaga. Later when he was not satisfied with the amount of destruction the hanyou was producing he turned him into a demon.
Although he had never changed the outcome of a single event, he had dragged the hanyou through madness just for the hell of it. All to tweak his sister. Whether a god can lose his honor is not clear since gods are not subject to the limitations of others. Soosanoo never cared if his actions were honorable. Whether his actions were honorable or whether his honor could be restored was something humans and demons could only speculate about since they could not judge him.
Once there was a goddess who in her anger had blocked herself in a cave and banished her brother to earth. She knew everything that ever happened and everything that would happen. It irked when others attempted to interfere with the events were to be played out. She took back Kagome's book because she could not mortals altering the way that events should occur. She threatened her brother because he dared to change the exact manner in which events were to happen. It did not matter that nothing had changed. The fact that he had the temerity to use the hanyou for own amusement and put all of the kami in Japan at risk was beyond the pale. She had no need of honor. She was there to ensure that the universe went on the way that it should be. If this meant putting obstacles if front of Nobunaga to prevent him from changing the course of events. It did not matter what might happen to the hanyou. She did not personally care if he lived or died. What bothered her was that what he was doing was not what he was supposed to have done.
Once there was a minor lord who was not even the leader of his clan. Just as he had finally inherited his family home, another tried to crush him just because he was on the road to Kyoto. He had been prepared to die fighting preserving his honor by fighting when he was outnumbered 10 to 1. But instead the gods had stolen his glory by inserting a hanyou in his path. Nobunaga decided to forego his honor and taken advantage of the boon which the gods had bestowed upon him. From that moment on he became totally confident of his ability to become the supreme ruler of Japan. The hanyou was merely a weapon to be used against others. Those who opposed him would be pushed aside. He had survived so much. Takeda Shingen had opposed him. He was dead. Ueseugi Kenshin had opposed him he was dead. The last Ikku Ikki bastion had been overthrown. His only regret was that he had only been able to burn their fortress and not kill all of them as he had at Mt. Hiei and Nagashima. He might not be the greatest warrior in the world like Takeda Shingen and Ueseugi Kenshin, but he had survived their onslaughts and they were dead. The gods must have great plans for him. The hanyou was the key. His life had turned around the day he came into Nobunaga's life. It mattered not what happened to the hanyou. Nobunaga had made Inuyasha kill thousands of humans for him. He had watched him drink their blood. Nobunaga was truly the Demon King. He had sold his soul to achieve his end of the conquest of Japan. He would do so even if he had to have Inuyasha kill every demon and human in Japan who opposed him. His honor had been lost on that day so long ago when Inuyasha had handed him the head of Yoshimoto. Honor no longer meant anything to him. Only power. He would do anything to achieve it. Break in barrier. If he had to kill every Buddhist monk who opposed him he would do it. If it meant bringing the gaijin and their gods to assist he would do so. He has made his deal with the devil and would not look back to satisfy honor. The die had been cast.
And so the boy who had gained his honor by fighting for humanity against evil had instead become an evil demon had no thoughts of honor only of killing and drinking the blood of his victims. Inuyasha's honor would only be restored when the demon was gone and he had done penance for his sins.