The Sweetheart Everyone Loves Is Forced into a Sickly Lover’s Chains

[Mary Sue + love at first sight + split personalities + male rivals in a romantic battle royale + everyone’s favorite + both leads have only ever been with each other + quick transmigration (or maybe slow transmigration)] First world: delicate, frail young master X split-personality top. Mu Mian transmigrated into a book as a brainless, foolish cannon-fodder character. His fate was to offend the protagonist shou and get beaten to death by the protagonist gongs. To return to the real world, he agreed to help the System turn his fate around. But why had the plot changed beyond recognition?! The first protagonist gong, a fake bodyguard who was really a CEO, turned red-eyed. “Mianmian, please don’t leave me, okay?” The second, a cool and abstinent doctor, lost his composure. “Mianmian, why are you always so disobedient?” The third, a seemingly innocent but secretly ruthless young man, wrapped an arm around his waist and asked in a strained voice, “Mianmian, would you only look at me if I locked you up?” His bold, free-spirited childhood friend, the villain, had red-rimmed eyes. He traced Mu Mian’s cheek with his fingertips. “Sweet Mianmian, you’re so frail. How about I carry you all the time? Be good.” Mu Mian, who had somehow inherited the universal heartthrob aura: ???