The Desperate Male Supporting Role, the Female Protagonist in the Beginning of the Collapse of Heaven

(The male and female protagonists plus the villain are reborn + system + through the book + vicious male supporting character.) Fu Shiyan, the original author of dozens of short plays, died unexpectedly after his information was leaked by a person. The countdown system for life appears, allowing him to travel through the book to the male partner of his novel to conquer the female protagonist. Only by changing the sadomasochistic love to a sweet love ending can he obtain the continuation of his life. The system time is extremely limited, the male and female protagonists have no brains for love, and they know everything about the villain in the original book. Even if the author wants to change the ending, it is very difficult. See how Fu Shiyan conquers the vengeful heroine step by step, how he makes the male protagonist retreat once again, and finally embraces the beauty.