AFK System from the Start: I Put an End to the Age of Demons

[No female lead] [Decisive and ruthless] [Slay demons and exorcise evil] [System] Shen Han transmigrated to the Great Wei Dynasty and became a constable. From the start, his fiancée broke off their engagement and his martial arts were crippled. This world is plagued by demons amid chaotic times. Millennia-old clans hold sway, foreign races eye the borders hungrily, and sinister forces stir in the shadows. How can Shen Han survive in this turbulent world? Fortunately, he awakened the Infinite AFK System. As long as he kills an enemy, he can set them as an AFK target and cultivate through them. Kill a black-haired wild boar and gain the talent [Boar's Strength], earning 2 experience points while AFK. Kill Tang San and gain the white talent [Tang Sect Hidden Weapons], earning 5 experience points while AFK. Kill the Skin-Stealing Demon and gain the green talent [Skin Theft], earning 1,000 experience points while AFK. Kill the White Serpent Adept and gain the blue talent [Heaven-Swallowing Art], earning 3,000 experience points from the System. Before he knows it, Shen Han has steadily risen to the pinnacle. From a lowly constable, he goes on to suppress demons, slay foreign races, bring the great clans to heel, and become the emperor of his age, reigning supreme through the ages.