The sequel to The Gray Mage is up! https://www.royalroad.com/fiction/31297/the-gray-god

Three centuries after the god Rynovar claimed Earth as his own domain, ending the Fourth Age of Magic, he ruled the worled from a floating continent. Deciding to allow humans a chance at having a wished granted or a question answered, Rynovar created a quest fifty years into his reign, upon completing which they would be granted an au dience with him and permission to make a single request or question. However, two and a half centuries after he issued the quest, none had succeeded, and it was believed impossible, several stages of it having never before been completed.

When nineteen-year-old Cyrus met Lyda at a restaurant, he broke the norm of his life cleaning up his brothers' messes and keeping them behaving to avoid causing issues for the public. Upon hearing her desire to earn enough money to attempt Rynovar's quest, Cyrus chose to help her complete what was believed to be one of the quests' impossible stages, revealing that he himself had a question for the god he wanted answered...