I don't want to make a person after wearing cannon fodder

"not mine"

After Tang Songnian was in a car accident and passed through the book, the system told him that the original owner still has 2 and a half years left Lifespan...
　　In order to survive, Tang Songnian endured the humiliation and reached a cooperation agreement with the system to seize the identity and destiny of the protagonist of Shenmo World.
Anyway, Shen Mo is lucky, what's wrong with me?
　　After signing the agreement, Tang Songnian took the place of the protagonist Shou in Shen Mo's heart, breaking through the atrium step by step to seize the aura of the protagonist.
　　A lie needs another lie to complete. When the saturation of the lie reaches an unbearable intensity, Shen Mo behaves unusually calm after knowing the truth.
Tang Songnian: "If I say, I didn't do it on purpose, would you believe me?"
Shen Mo: "Heh."
　　Shen Mo could hear other people's voices since he was a child, and knew that those people had one thing behind the other, and then a person appeared, Not only did he look like the figure in his heart, but he couldn't hear his voice.
Tang Songnian was not only sweet-tongued and pretty, but also acted coquettishly and cutely, often purring like a puppy. Shen Mo loved Tang Songnian more than he expected, and his bottom line became wider and wider, until later, Tang Songnian became his bottom line.
Suddenly one day, the lie was exposed by accident, Shen Mo thought, from now on Tang Songnian will never believe a word!
However, every time Tang Songnian attacked, he would fall, and he couldn't change it at all.
Shen Mo couldn't hear Tang Songnian's voice, until one day he heard a thing that claimed to be a system instigating Tang Songnian.
Everything is completely off the track of the original plot...