The rarest thing about demonic beasts was that they were violent and bloodthirsty by nature, and there was a Deep Gap between them and human cultivators. The tragic battle in the sea of stars that year was just one of the insignificant battles in the many years of war between human cultivators and demonic beasts.
For thousands of years, the two sides had always been at war with each other to exhaust the weak and low-level bloodlines, eliminate the weak, and leave behind the more powerful genes. This was also considered a successful conquest of the starry sea, leaving more resources for the survival of the great demons.
However, it was precisely because of the thousands of years of war between humans and demonic beasts that the bones and blood of demonic beasts had an instinctive desire to kill cultivators.