A Year Through Hell

Oliver makes a deal with a demon to save his sister and in return, he has to give his soul but he says no and finds another way by killing people and providing their souls to said demon. He falls back on his payment and gets forced into hell in which the demon king, Yukitoyo, forces the blond to become his servant. Oliver is then moved into a maid dress and made to work as the king's servant till the demon finds it fit to let Oliver go. He tries to do his job yet hates it and discards his work anytime he can, eventually the demon king grows a small attachment to the human, and the human gains a slight crush on the demon king but refuses to accept it. During his time as a servant, Oliver has to bear with constant teasing, intense heat, attempts on his life, people trying to get with him and use him, and losing the ability to walk