Song Yan awakens in a realm where immortals and demons clash in eternal struggle, only to be enslaved by the Puppet Demon Sect as a skin-making servant. When his system suddenly activates, he discovers a dark path to power: each skin he crafts grants him extended lifespan and deepened enlightenment. [Absorbed stubborn donkey lifespan: 10 years] [Select lifespan allocation] [Invested ten years into Profound Root comprehension—your body lies motionless as spectral forces pierce through...] Through this macabre craft, Song Yan must navigate the treacherous balance between human and demon, using forbidden techniques to carve his ascension in a world where righteousness and evil wage endless war. Every sacrifice of lifespan becomes a stepping stone toward cultivation transcendence, but the price of power grows heavier with each passing day.