Please Don't Defeat Me, Hero

'''Introduction to the Work: Hyebeom, an icon of misfortune who has lived a life where if he falls, his nose breaks, and that nose fills with snot, bringing him to the brink of life and death, one day picks up a dog that was hit by a car and takes care of it... They say that dog was the Demon King from another world. To make matters worse, as a reward for taking care of it, he even inherits the position of Demon King. "Thus, you have been selected as the next Demon King." "I appreciate the offer, but I'm about to graduate soon and need to prepare for a job, and being a Demon King seems a bit difficult..." "I'm glad to hear you'll do your best." The world he's been transferred to is one ...