After Being a Ghost for Thousands of Years, I Became a Human Again

Traveling to a parallel world, he became a ghost that no one could see. It lasted for thousands of years. Thousands of years. He has seen the most noble and graceful beauties and knows all their secrets. He has also seen the dirtiest transactions and knows the whereabouts of stolen goods and accounts. He has been in the most cutting-edge technology production workshops and can remember all the craftsmanship details. He has also entered the most stringent bank vaults, and even knows the passwords that hide the rich. When the world has no secrets in his eyes, when he is tired of this empty life... He became a human again! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.