The job of a medical jurisprudence involves a lot of complicated crimes such as murder and accidents. Hikaru is a graduate of a medical university, also focused her discipline on neurology. One night during a student reunion, a dead body was found in the kitchen. Hikaru, who is a little regretting that she choose her focus in neurology, was moved by another doctor's words, Dead bodies will not tell us what happened, that is why we have to piece together its last words.