I Am at the Pinnacle of Urban Demon Removal from Scratch

For millions of years, the gods have framed the world with the rules they created, but the great monsters that rush out from the underworld every year still shake their status. How should human beings survive in this world of gods and monsters? After a long experience in college life at a certain national university that eliminates demons, he finally became a newcomer in a private firm. What awaits him in the future is... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.