The Supporting Female Cultivator: The Junior Sister’s Comeback

She fell into a cultivation novel as the heroine’s cannon-fodder junior sister, and had no intention of challenging a heroine blessed with heaven-defying luck. After an accident, she somehow acquired a System called the Path to Immortality System. She chuckled to herself, secretly pleased. The heroine could cultivate her own pocket dimension, while she cultivated her System. They could each mind their own business. But what was wrong with this heroine? She kept shooting daggers at her, again and again, and even tripped her up behind her back. Just because she’s the heroine, does she think I can’t take her down?!