I Am a Laborer in Heaven

A world where everyone is martial. An ordinary high school student was selected to work as a temporary worker in Heaven. "What spirit stone? This is a piece of gravel I picked up casually." "What? Is this Enlightenment Tea? Isn't this the fallen leaves I used to clean the house?" "Did you discover the ancient immortal's cave? I've grown so much while fishing at work." ..."Actually, I'm really just a wage earner." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.