This is a novel that I have never read. Ning Yu comes in and becomes a cannon fodder. His name is not even mentioned in the original text, but he is chased by the enemy of the male protagonist Shen Rongli and burns down the whole family.
Ning Yu twitched his lips: "System, show me the way to heaven."
System: [Strike the yandere Shen Rongli, assist the male and female protagonists in their romance, eliminate the villains, let the host choose>ෆ
Intention: Unrestricted, live your own life