[Two Male Leads + Both Pure + Transmigrate into a Book + 1v1 + System + Cute Pet]
Jiang Yi, bound to a System, transmigrates into the male lead's contracted beast. To survive, Jiang Yi must follow the original plot in the future, betray the male lead, and then die at his hands, skinned and dismembered.
Jiang Yi: What? I transmigrated and was reborn, and I still have to die? And in such a horrible way! You might as well just kill me now.
The System says: We have a substitute! You won't actually have to die.
Jiang Yi: Deal!
And so Jiang Yi spends his days acting cute and sweet with the male lead and helping him beat up the bad guys.
After completing the plot point where he betrays the male lead, Jiang Yi watches the male lead climb out of the Demonfall Cliff early, looking unmistakably wrong, and panics.
Jiang Yi: Wait, why has the male lead turned evil?!!!