Inuyasha tried to save the woman, but Jaken attacked Inuyasha with the Nintōjō, getting his attention.Sesshōmaru taunted him for being a half-demon, and asked him where their father's grave was, only to be told that Inuyasha didn't know.
However, when questioned if he had anyone to protect, Sesshōmaru told his father that he did not.Sesshōmaru began his quest for Tessaiga by searching for the place described by a short riddle: "Seen, yet never seen, protected, but never known to its protector".This was the only known clue as to Tessaiga's location.Unlike many other yōkai, he had no interest in possessing even a single shard of the Sacred Jewel to enhance his powers.On his journey, he was accompanied by a two-headed dragon named A–Un, a demon imp named Jaken, an orphaned human girl named Rin, and eventually Sango's brother Kohaku.To lure Inuyasha into revealing the secret to the whereabouts of Tessaiga, Sesshōmaru then appeared and gloated that he knew where their father's tomb was.
He grabbed Inuyasha and pulled a black pearl from Inuyasha's eye.
Sesshōmaru proceeded to tell Inuyasha that if he didn't answer, he would kill the woman in the carriage, Inuyasha's mother.
At first, Inuyasha didn't believe that the woman was his mother.
Sesshōmaru ordered the demon to attack them, but before they could get hurt, Inuyasha's mother transported them to a different place.
Sesshōmaru was annoyed by Jaken's bothersome plan, and told him that if it should fail, he would kill him.
After his father died to protect his new hanyō half-brother, Inuyasha, and his human mother, Sesshōmaru began to hate them.