I Traveled Through All the Worlds and Finally Became a God

Who I am? My name? Which one are you referring to? My first name and identity have been forgotten, but there have been many others since. Sometimes I am the highly anticipated seed of immortality, sometimes I am the arrogant and domineering rich second generation, sometimes I am a poor and smelly beggar, sometimes I am a genius with innate magic power, and sometimes I am a wild deer in the mountains... I feel like I have been abandoned by the world, and like a bug in the program. As for the source of all this? Let me think about it first... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.