Isn't It Wrong to Travel Through Time and Become the Little Junior Sister Who Is the Savior?

Introduction Qiao Xi was enjoying life in a sweet dream when she was suddenly thrown into a fantasy world where strange beasts were rampant and cultivators were everywhere. The nervous system not only arranges the main task of saving the world, but also has side tasks that are updated at any time, which is comparable to a capitalist. Qiao Xi thought that saving the world and purifying pollution would be a no-brainer, but her senior sister didn't seem to be straight. Why did the male protagonist Long Aotian in the original book only have a pure comradeship with her senior sister? What on earth did you write in the original novel? ? And how could the cute cat I picked up turn into a ferocious demon king? The key point is why this demon king is smiling and frowning at one time and he feels mentally abnormal... The system promised me that next time I sign a contract with an unknown creature, it will help me find out the details. Don't let me go! Purpose: Ordinary people also have the power to be positive