Shinigami is a type of spirt that is able to pull her "Master" in a distroted reality called "Mystery Labrinth" where its rules there are...weird, like up is sideways and cake is meat. She is unnaturally numb when it comes to serious things like murder cases and killers, attempting to relentlessly tease her "master" by constant flirts and teases at them to make em blush even when there's a body right in front of them, proving that she is numb to the concept of death in this screwed up reality