The story takes place one year after Inuyasha and his friends defeated Naraku, the final boss. Naraku's last clone, the dreamy Byakuya, suddenly appeared on the site of the battle. After rebirth, Byakuya got rid of Naraku's shackles, but he also lost his demon power...
The dreamy Byakuya began to adapt to the current life while constantly looking for answers. He found Inuyasha and many people. It was not until he met her that Byakuya's mystery was completely solved...