Monsters

Mr. Kline suffers from a terrible condition, he sees regular people as if they were monsters. But not just any random kind of monsters. Each person, depending if they are good, bad, sad, happy or in any other emotional state, will manifest that state to the eyes of our main character as a specific monster. So a good and gentle person will probably appear as a pink blob while a bad an angry person will appear dark, gritty and with big teeth or sharp horns. Through the years, Mr. Kline learned to live with this condition by keeping himself away from society and any social interaction, until the day that he sees on the street a perfectly normal human being.