My System Is Invincible

"I'm a System for transmigrating into a book, number 038. My name is Nainai, AKA Invincible Under Heaven. I'll clear every obstacle and keep my Host safe as they pursue their target and complete their mission." "If you want something done, do it yourself." "You're old enough to know better than to believe that kind of nonsense." "That's right, I'm not doing it. What are you going to do about it?" "You're not in mortal danger. Do I really need to waste my talents on this?" Liu Yueyue's face twitched. "Other Systems do everything they can for their Hosts. Look at you! You're always vanishing without a word and abandoning your Host." With a System like this, all she could do was fend for herself. You mangy prince, have a taste of my family's traditional ear-slapping technique! As the story progressed, she began to sense that something was off. Had she really been randomly chosen by the System, or had someone deliberately arranged everything behind the scenes? System: "One-Palm Superhero, go!"