[Factory-Courtyard Life • Face-Slapping Matches • Hidden-Advantage Revenge • Rising Star at Work] Tian Xiang watches her fiancé slip away to her cousin without batting an eye—until she sees the glowing words floating above the rival's head: "Reborn Heroine." Everything shifts into focus. She's trapped in a 1970s harem-novel reality where every person carries a blazing tag that reveals their role: Big Villain, Tragic Second Male, White Lotus, Evil Mother-in-Law, Villain #1, #2, #3. Her own tag reads "Silly-Sweet Cannon-Fodder." That ends today. Armed with her position as a factory-union clerk, Tian Xiang begins rewriting the narrative. She alerts the forgotten background characters, undermines the supposed male lead, and transforms herself into something the novel never predicted: "Ultimate Villainess." The story promises villains will be destroyed. Tian Xiang's wager: "If I fall, nobody escapes." Meng Cheng'an's journey mirrors the chaos she creates. His labels shift at dizzying speed—Background NPC evolving into Major Villain, then Obsessed Lover, Yandere Husband, and finally Shamelessly Devoted Spouse. Each disruption Tian Xiang causes accelerates his transformation, until his final tag crystallizes: "Her Partner-in-Crime—For Life."