The Senior Sister Is a Professional Sacrificial Extra [Book Transmigration]

[I don't know how to write yet] Bu Chengyan brings a System into the abandoned story she once left unfinished and becomes a cannon-fodder character who won't survive past ten thousand words. Bu Chengyan: My fate is mine to control, not heaven's! I'm not about to get killed off that easily! Bu Chengyan: What do I do when the scheming heroine keeps trying to kill me? Lu Ting: ... (sharpening her knife and aiming it at Chengyan) Bu Chengyan: What do I do when the hero, who was supposed to send me flying with one sword strike, suddenly pulls a face-slapping turn and transforms into a clingy puppy? Yan Shanyue: (looking utterly harmless) Senior Sister? Senior Sister? Senior Sister! When danger first strikes... Yan Shanyue: Senior Sister, I'll scout ahead! Lu Ting: Senior Brother Shanyue, no! Let me go instead! Bu Chengyan (rubbing her forehead): Fine, I'll go. Being cannon fodder is my profession. After countless hardships and trials... Bu Chengyan (shielding Yan Shanyue): I'm the cannon fodder. Shoot me! Yan Shanyue (gently moving Bu Chengyan's hand aside and holding his sword in front of her): Senior Sister, I'll protect you. Theme: Don't be prejudiced against others. Some demons are kind, and some immortals are scoundrels.