At an unknown mansion, 200 years prior to the begin of the main story When he once admitted that his ideal situation to his romantic woes would be to have both Kikyō and Kagome, Miroku responded with amusement and understanding. The idea of leading normal lives together appealed to them both. Inuyasha began to think Naraku could not have gone far with his injuries. On many occasions, Inuyasha unintentionally hurt Kagome's feelings by ignoring her whenever he ran after Kikyō, or by asking her to leave the two of them together for just a moment. She barely put up a fight to stop Inuyasha and instead allowed him to pass.As Sesshōmaru ran to find Rin, Inuyasha realized that Kohaku might be guarding her.

What she later realizes is that she ends up understanding Inuyasha more than Kikyo ever could. He knew Sesshōmaru would kill Kohaku and ran to save his life. He lowered his barrier and allowed his scent to escape to lure him in. They argued from time to time, but Sango always helped Inuyasha when he was in trouble, and occasionally gave him advice when it came to Kagome. Inuyasha himself could not control his tumultuous soul. Some demons are very social, especially canine demons, such as dog or Most demons usually only associate with their own kind, unless driven by some pressing need or self-interest, especially when overwhelming numbers are needed; but without a strong leader like Sesshōmaru, In relation to humans, demons either ignore or are outright hostile to humans, though they generally fear reprisal from priests, priestesses, and monks. However, after meeting Kagome and other gentle humans, he came to understand his human half and began to search for true strength of spirit instead of raw demonic power.

Since Kagome was the reincarnation of Kikyō, she and Kikyō shared the same soul. He even occasionally struck young kids if they bothered him, which was often the case with Shippō. He quickly changed his goals from obtaining the jewel to obtain more powers for himself to wanting more power to protect Kagome, as pointed out by Miroku shortly before Sangō joined the party. He was pinned to a sacred tree by a sacred sealing arrow shot by the priestess Kikyō after he attempted to steal the Shikon no Tama. Through a conspiracy, however, they have torn apart. However, his volatile emotions could often drive him to behave childishly and became tiresome to his friends at times. Although his friends described him as "easily deceived and honest to a fault" and "unable to understand the subtleties of the human spirit," his personality was difficult to dislike. When Inuyasha found out the connection between Naraku and Onigumo's heart for Kikyō, he expressed rage towards him, promising Kikyō that he'd never let Naraku hurt her. Inuyasha was dense and rather slow to catch on; for example, he didn't know of Sango's strong romantic feelings for Miroku until much later than the rest of the group. Though despite all their fighting, the two did help each other when the other needed it and eventually became friends. Despite constantly going to Kikyō's rescue when she was in danger, he gradually came to accept that he and Kikyō had no future together, and when they met in private it was only to speak of defeating Naraku (though Kagome had a very hard time believing this rationally, due to her intense and impulsive jealously). Whenever tears were shed for him, with their gentle scent bringing relief, he felt that he had found his place as a protector above all else. Kagome's mother even gave her blessing for Kagome to leave the present time forever to live with Inuyasha in the Feudal Era. When he saw something new, his eyes lit up, and he tried to interact with it. Whenever Kikyō was in trouble, Inuyasha instinctively went to save her out of guilt, saying that he was the only one Kikyō had. Finally, Inuyasha defeated Ryūjin by using his Kaze no Kizu several times so the dragon demon could absorb his energy and fire the energy back at Inuyasha, allowing him to use the Bakuryūha, and defeat Ryūjin.

Having grown up in a dog-eat-dog world, shunned by humans and demons-alike, constantly in danger, Inuyasha grew cynical and, for a long time, trusted no one. They were constantly fighting for any reason they could find, and whenever Kōga is near, Inuyasha instantly got infuriated, demanding he leaves immediately. He believed that all life was equally important.

Inuyasha mentioned he never once s… Contact with Kagome healed the deep loneliness in his soul. In his first battle with Kagura, she was able to prevent him from using his Kaze no Kizu. However, he is not a perfect strategist, as he has been repeatedly outmaneuvered by Naraku. At the same time, Naraku used the Jewel Shard implanted in Kohaku's back to command him to kill Rin. When he assumes human form, Inuyasha's demonic claws and fangs, as well as his dog ears, disappear. Immediately after being released from his fifty-year seal, Inuyasha sought to become a full demon and acquire power quickly by using the Shikon Jewel. Eventually, Inuyasha proved his might to Tōtōsai, and he proved to be another great source of knowledge and insight, very much like Myōga.