Heeseung transmigrated into a novel. He became a cannon fodder character who just happened to share his exact name, someone who, in the original story, existed only as a plaything in the palm of the yandere psychopath Sunghoon. But something was off. The Sunghoon who was supposed to be a cruel, obsessive yandere had turned into someone completely different. Instead of being terrifying, he was clingy to a fault, obedient to the point of being almost spoiled. Every single day, all he wanted was to stick close, wrap his arms around Heeseung, and steal kisses whenever he could... As a completely straight man, how on earth was Heeseung supposed to deal with this?