At the Demon-Slaying Bureau, I Become Invincible by Slaying Demons

Lin Ye wakes up to find that his soul has unexpectedly transmigrated to the cultivation world, where he has become an executioner in the Demon-Slaying Office of the Wu Dynasty. Demonic fiends run rampant, the demon races flourish, and humanity is steadily declining. Fortunately, Lin Ye possesses the Human Merit Ranking. Slaying demons earns him rewards. As an executioner in the Demon-Slaying Office, Lin Ye kills demons every day and receives all kinds of rewards, such as a Supreme Immortal Embryo, Tiangang spells, and an unparalleled immortal sword… Immortal treasures rarely seen even once in ten thousand years are as common as weeds to Lin Ye, and he gains with a wave of his hand the cultivation realms others spend ten thousand years attaining. Through endless years, he steadily builds his strength, determined to become the most powerful being across the Five Heavens and Nine Domains…