Possessed as an Ascetic Destined to Die by the Protagonist in a Xianxia Novel

'''I possessed the body of an extra destined to die as a sacrifice to seal the Blood Soul Asura in a cultivation novel. ‘Why did it have to be Yu Yeon-seo!’ I didn't want to die like this. I wanted to live. “I want to live, please save me!” After eating some mysterious red moss, I woke up to find Baek Un-jin, an elder of the prestigious cultivation clan Cheong-u Sect, standing before me. “Pardon? Spiritual roots? I shouldn't have any.” “What on earth are you talking about? You are a possessor of a special spiritual root.” To survive in this strange new world, I become Baek Un-jin's disciple and embark on the path of a cultivator. *** “How... how did you survive!” “Wait, why are you...