On the seventh day after my grandfather died, I found a yellowed talisman tucked into the writing notes he left behind. The "sudden death from myocardial infarction" that was firmly on the police's desk appeared in my eyes to be densely packed with corpses. When a mystery that cannot be explained by scientific autopsy arises, I can only use the method passed down by my grandfather - corpses never lie, but we need to understand their language.