After I committed myself to the yandere villain, the male protagonist turned evil

Shen Niannian, the innocent and crazy villain x drama wolf heroine, has passed through the book and transformed into an incompetent and sadistic heroine in a fairy tale. In order to change the ending of the heroine's final death, Shen Niannian decided... to get the Hundred Demon Sword that killed her first! Unexpectedly, a system was forcibly installed at the beginning. Well... the system is not a serious system, but it is imperative to defeat the villains. In response to this, the psychologically strong heroine of "Abuse" spread her hands and said: Get the sword first, and then fight back. As for the strategy...just let it happen. If that doesn't work, just rely on force value to crush the target! ... ... The male protagonist Yun Xiao wants to develop a standard sadistic plot of 'she escapes and he chases her, but she has no wings to fly'. Shen Niannian weakly hid behind the villain: "You old Bideng, you are so young that you still miss me, a young girl, you are shameless!" The vicious female protagonist wanted to get rid of her, but she raised her own with her weak hand. Big Ax: "Today, this lady will convince others with virtue!" That's right, the name of her love ax is: Virtue. If you can't beat him, just hide behind Lu Wenyan. Who is Lu Wenyan? The main villain of this book is a murderous pleasure-type madman! ... ... ... Before reading the book, Shen Niannian felt that the male protagonist Yun Xiao in the original book was more stupid than the villain Lu Wenyan. After reading the book, Shen Niannian discovered that... Yunxiao was a real dog, and Lu Wenyan... was an innocent dog. When they first met, Lu Wenyan said he wanted to gouge out her heart and eyes with an expression that would make her look like an immortal. Later, he said that he would drag her with him even to death. But one day, Lu Wenyan stood beside her, pointing his sword at the sky. Under the mottled light and shadow, he has thick eyelashes, curved lips, and a spring-like smile. "It turns out you want Shen Niannian's eyes." "Then wait until I gouge out your eyes and then kill the woman you miss." "Bringing nightmares to Shen Niannian, then...you guys You should go to hell." ...