I Possessed a Cultivator Destined to Die by the Hands of the Protagonist in a Xian Xia Novel

I was possessed as an extra destined to die as a sacrifice to seal the Blood Soul Shura in a Xian Xia novel.

"Why of all people, Yoo Yeon-seo!"

I didn't want to die like this. I wanted to live.

"I want to live. Please, let me live!"

After eating some strange red moss, I woke up.
There before me stood Baek Un-jin, an elder of the prestigious Cheongwoo Seonmun cultivation clan.

"Huh? A spiritual root? I'm not supposed to have a spiritual root."
"What are you talking about? You possess a special spiritual root."

To survive in this unfamiliar world, I became Baek Un-jin's disciple and started cultivating.

"How... how did you survive!"
"Wait, why are you trying to kill me!"

The moment I reunited with Yang Ja-han, I realized that my very existence was the very "seed that brings calamity."

"You must not live! Yoo Yeon-seo!"
"Don't be ridiculous! Now that it's come to this, I'll surpass both the protagonist and destiny itself and survive!"