I Conquer This World with My Martial Arts

The protagonist unexpectedly travels through the world of evil spirits, where evil spirits are raging and human lives are like grass. With the control panel, he can infinitely modify his martial arts, become a saint in his body, and crush all the evil in the world. "Evil spirits are hard to kill?" "Modify the "Thunder and Fire Demon-Conquering Technique" to the extreme!" The power of thunder and fire reaches through the sky and the earth, destroying all evil! "With the frenzy of evil spirits, will the human race be destroyed?" The protagonist opens the panel, directly modifies the supreme martial arts, and cultivates the heaven-reaching power to suppress it forever!