Race to godhood

Earthrosa, a world in which different types of life forms exist in it's land. well it be humans, goblins, elves and many more but none from the land compare to the celestial beings who are belived to exist in the skies as the "Gods" of this world. Titled the "Celestials", no mere mortal has had the luxury to even lay their eye upon their godly appearance which questions the existence of such god, the existence of the gods in the skies were mostly a traditional belief because of the lack of evidence to prove their existence but still there are some mortals in the lands who wholeheartedly follow their respective gods and believe in their existence. Many or mostly all opposed their beliefs but one faithful day, an anomaly struck the lands. the gods who's existence were once question were provings their own existence. The gods spoke to the mortals "Those mortals who wish to attain godhood, step forward and fight for it! cross the seven realms and reach the final realm, where we all will welcome you with open arms as you have had proven yourself to be worthy to attain godhood by crossing the seven realms and reaching the final realm of gods." It was when, 500 years ago began the race to godhood. from then, almost uncountable numbers of people have ventured through or at least tried to venture through the seven realms which they didn't even know existed before the words from the gods but better or for worse, the words from the gods triggered the age of ascension towards godhood which is still thriving 500 years after. Unfortunately, not many or even only very few individuals have been able to successfully cross the seven realms and reach the realm of gods in 500 years and those unfortunate ones who didn't make it met their respective ends in one of the seven realms. The journey is extremely dangerous and even those who are well prepared meet their end in just the first realm but the young man who's name itself explained his nature, Zero A. Deventure who is always thriving for adventure and thrill, who's entire reason for existece is to freely venture where his heart tells him to go, took on this journey with no return. Why? one may ask. the answer is as simple as it can get, because he felt like doing so.