The daily life of Origin Being

Synopsis:
A Man from a slightly weird world died, And found himself in the void, Boundary or something like that, as there is nothing there, and roamed in that place for an uncountable amount of time, maintaining his sanity was the only thing he could do, while also thinking about his life.
After an uncountable amount of time, a flash of light appeared in front of him, and from that, an Old Man(?) came out, and gave him the choice, as to become strong by going to God Realm or to travel Various World. Of Course, the nearly insane man chooses the Second Option and goes on his journey to become, the STRONGEST, while also finding the truth about his own life, and traveling the infinite realms.