The Dog Actually Traveled Through Time and Became an Immortal

It's no longer new for people to travel through time and space to cultivate immortality, is it? Knowing that you can actually travel through time and cultivate immortality, it's really a perfect level! When we reach the end of time and are accidentally reborn through time travel, what will happen in another world? I started writing recently. Please correct me if I am not good at writing. I am a newbie with a new book. I hope everyone will support me. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.