Demon Abyss, Mad Donkey, Evil Sword Immortal

Thirty years of grinding—ten refining demons in the abyss, ten walking the mortal world, ten sharpening his blade to perfection. Qin Feng knows the immortal path is a raw deal, but some debts can only be paid in blood. Some enemies won't let you sleep until they're six feet under. When cultivation becomes personal, even the heavens have to step aside.