Here, I had a long talk with Brute sword and Beast Slave.
They also got news about me before. When the Beast slave knew that I was reincarnated, I would certainly seek revenge from the rain devil. Therefore, he has already promised Brute sword, and he will attack the Rain Devil immortal when I arrive. This is also the reason why Brute sword said before that the rain devil is very close to death.
This is not to say that the brute sword is not the opponent of the Rain Devil immortal, but that the Rain Devil immortal is really too cunning. Over the years, Brute sword has not known how many times to assassinate Rain Devil, and every time failed.