I Was Reborn and Became My Sister's Guardian Spirit

High school student Lin Ze died unexpectedly, and his soul traveled through the fantasy world, struggling for hundreds of years to become the overlord of this world. The teleportation array built by sacrificing all the resources of the entire world successfully sent him back to his previous life, Aqua Blue Star, but... What went wrong? Why did I return to the year after my death in a car accident and become my sister's guardian spirit? ???′Д`??┻━┻Where is the promised rebirth of the Urban Immortal Emperor? In addition, as time passed, Lin Ze gradually discovered that this world was not as simple as he imagined in his previous life... This book is neither poisonous nor brainless, its IQ is online, its outlook is normal, there is no system, the progress will not be too fast, and the description will not be too empty. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.