Reborn as the Male Lead's Unlucky Blood Bag

[A faux transmigration into a book, devoted couple, one-on-one romance, past and present lives.] Bai Wei transmigrates into a book one day, only to become the most pitiful female supporting character in the story: a hapless blood bag for the second male lead. She is rich and beautiful, yet willingly lets him bleed her dry for his sake, only to be killed by him in the end. On her first day after transmigrating into the book, she catches the second male lead trying to bleed her and kicks the scumbag in fright. Just as Bai Wei settles into a comfortable retirement, she accidentally activates the “Protect the Purity of the World” System. It tells her to stop the second male lead from meeting the heroine, which also ends up saving his life. But if she wants to survive, Bai Wei has no choice but to complete her missions. But why have the heroine and hero broken up? And why is she blushing and smiling sweetly at the hero’s uncle? Has the hero accepted someone else’s confession? Has he even settled down? Why does the second male lead keep going off script? And why is he acting all clingy and confessing his love to her? After an accident leaves the second male lead in the water, Bai Wei regains her memories. It turns out none of them are characters from the book.