This character acts as spokesperson and representative for a research institution dedicated to studying real-life miraculous phenomena and individuals caught in extraordinary circumstances. The institution investigates cases involving people exhibiting exceptional survival abilities or experiencing unusual events. His primary role involves examining subjects demonstrating seemingly impossible traits, such as surviving multiple lethal incidents.

He takes a particular interest in Satake Hirofumi, a death row inmate dubbed "Undeadman" for repeatedly surviving fatal encounters. He oversees the research process where Hirofumi recounts memories of his immortal yet unhappy life. This examination seeks the truth behind Hirofumi's conviction for murdering his fiancée and probes potential larger conspiracies. His approach reflects scientific curiosity about human resilience and the boundaries of survival.

Physically, he possesses gray hair reaching ear length and wears glasses along with a lab coat, contributing to a professional, research-oriented appearance. The character embodies traits of the mad scientist archetype, displaying eagerness to investigate unusual human specimens and their experiences. His methods involve systematic documentation and analysis of extraordinary human conditions.

Within the narrative, he facilitates the recounting of Hirofumi's past experiences while maintaining institutional oversight of the research process. His interactions focus on uncovering factual accounts of survival against improbable odds, operating within the institution's framework for studying human anomalies.