Hidden in White: I, the Delivery Boy, Will Kill the Whole World

A reclusive master with both martial arts and medical skills, he delivers food in a down-to-earth manner. He is pestered by a wealthy lady because he has a face that looks exactly like the deceased. He uses his medical skills and martial arts to calm down the storm, and uses "boundless magic" to maintain fairness in the world. He protects beauties with one hand and calms the world with the other.