Feng Yi, a handyman of the Sword Sect, failed to achieve immortality, his skills were exhausted, and he fell into the mortal world. He unexpectedly obtained the supreme treasure book "Yin Yang Immortal and Demon Art", and the sword spirit root evolved.
He originally planned to stay in the sect and grow up, but unexpectedly happened to catch up with the confrontation between the immortal and demon worlds. When fishing in troubled waters, he never wanted to understand the true meaning of "Yin Yang Immortal and Demon Art".
When the great powers of the demon world found Feng Yi one after another, he could only be "forced" to use the secret method and unsheath the sword.
"I am the Holy Son of the Demon Realm, who dares to fight!"
