After the Villain Mistook Someone for His Fiancée

As a System created to assist protagonists blessed with good fortune, 01 mistakenly binds itself to an ordinary, delicate girl. 01 thinks the mission is doomed. A few days later, it watches in disbelief as its Host, who insists she's just an ordinary person and that fighting isn't suited to her, escapes alive. Her first reaction isn't to run away. Instead, she strikes at the root of the problem, blowing up her own mountain, where the battlefield and the enemy who captured her are located. 01 falls into a long silence: Maybe it really can believe the nonsense she says about being an ordinary person. Its Host looks pretty and delicate, like she can't fight, but something about her seems off... - Luo Chen was already dead and resting in peace, but somehow she came back to life. Her luck goes backward every day. She's either almost sacrificed alive or captured by evil cultivators. The System says her fiance is the person with the greatest fortune in this world. If she can find him and cuddle, kiss, and snuggle up to him, she can solve her bad-luck problem. Luo Chen thinks she would never put up with that kind of indignity! Until she runs into her fiance... System: "Weren't you adamant that you wouldn't put up with that kind of indignity?" Luo Chen says gravely, "He's practically being delivered to my doorstep. It would be rude not to make a move!" - Ever since Lu Li met his fiancee, his life has changed beyond recognition. The young man says calmly, "We can't do that sort of thing before we're married." "What's wrong with a kiss?" Luo Chen says, deeply distressed. "Be honest. Are you impotent?" The young man: "...??" Years later, a man who claims to be her fiance shows up looking for Luo Chen. "Are you really my fiance?" Luo Chen turns around. "Then who is he?" "Good question." The young man looks grim, then suddenly sneers. "I'd like to know too. How many fiances do you have?" Luo Chen: ... This is bad. It seems she latched onto the wrong person's luck and mistook someone else for her fiance. Theme: Unite knowledge and action, and work hard through every hardship.