Seducing Protagonist's Mother is Way to Immortality

The story is about Jin Yurux reading a trashy novel that had few readers. He decided that he would never drop any novel halfway in his life, so he completed it. After reading it, the next day, he saw himself as Zhi Lan, the protagonist's adopted cousin, and always used his power to bully the protagonist. The protagonist is Jin Ruixue, a strong-hearted girl who lives with her disabled mother, Zhi Qinglan. Zhi Lan decided to seduce Zhi Qinglan because only by doing this can he become the strongest. What else you can see in this story? 1. Zhi Lan has a system. 2. Zhi Lan is selfish 3. Few smut chapters and more story 4. Zhi Lan is ruthless 5. Since Zhi Lan is extremely selfish, he won't hesitate to destroy the entire world for his goal.