Double Agent to Catch Demon Officer

I am the number one executioner in the demon world, and executing death row criminals is my hobby. My weapons are a pair of magical sledgehammers, and the prisoner's soul is sucked into the sledgehammer by me. I like to paint in the magic weapon "The Spectrum of Unsung Heroes". The soul of the practitioner is full of ink and color, and painting is to reshape the true form. I, Xiong San in white, have a bad reputation and am worshiped by all monsters and demons. Human practitioners regard me as a traitor and public enemy, and I will be punished by everyone. I, Yang Xiaoyang, am a trainee demon catcher. The demon king seized his body and tried to sneak into the human world, but I was killed in a desperate situation. From then on, I am both a human and a demon. I practice Immortal Hammer Technique, I am proficient in boundless spells, I recapture countless magic weapons, I set up an invincible formation, Xiong San in white is Yang Xiaoyang, and Yang Xiaoyang is Xiong San in white. The demon clan sent me to break into the human world, and I established a trading base in the human world. The beautiful princess of the demon tribe wanted to recruit me as her husband, so I brought her into the human world and made her a top star.