Female Supporting Girl Cultivating Immortality: Junior Sister's Counterattack

Once she fell into the heroine's fairy tale and became a cannon fodder junior sister, she never expected to compete with the heroine who was so lucky. She got a system inexplicably by accident, and it was called the Immortal System. She was secretly proud of it. The heroine refines her space, and she refines her system. The two of them have nothing to do with each other. But what happened to the heroine? He gouged her with his eyes and knives once and twice, and even used stumbling blocks on her behind her back. Don't think that because she is the heroine, she can't kill her? ! …