Weren't We Supposed to Become Each Other's Nemeses? [Book Transmigration]

Chen Suyang, a popular young heartthrob, transmigrated into the novel adaptation he had just finished filming, becoming the villain he played: Su Yang, the Holy Son of the Demon Cult. To get back to his own world, he faithfully followed the script, working hard to stick to the plot and earnestly reciting his lines. He was just waiting for the protagonist to knock him down and run a sword through his chest. But... why did the plot seem more and more off? Wait, wasn’t the protagonist supposed to knock him down and stab him through the chest? How had it turned into the protagonist knocking him down and... and... something too complicated to explain?! [I meant to write a silly comedy, but accidentally got serious again.] [But I promise: both leads are each other’s first and only, 1v1 happy ending, no changing my mind!] [Young martial arts prodigy, son of a hero, top X Holy Son of the Demon Cult, pretty young heartthrob, bottom] In a dense forest, Su Yang stood with his sword facing Gu Feidi, and they stared at each other. Su Yang wondered: I’ve already finished my lines. The script said someone would come save him, didn’t it??? Gu Feidi was moved: He could kill me, but he still hasn’t made a move. On a wasteland, Su Yang took a fatal strike for Gu Feidi. Su Yang was furious: Damn it, if he dies, who’s going to stab me with that final sword and send me home?!!! Gu Feidi was anguished: He was actually willing to risk his life to save me. In a cave, Su Yang looked at the poisoned Gu Feidi, breaking out in a cold sweat. Su Yang was frantic: The script’s heroine has run off. Who’s going to cure his poison with a mouth-to-mouth kiss?! Gu Feidi waited eagerly: Why hasn’t he kissed me yet? This novel is also known as