Yoake Itaru, a 38-year-old investigator and confidential informant, is known for tackling cases that others avoid. He is particularly adept at uncovering the truth behind intricate cover-ups related to supposed "accidents" that are actually suicides or homicides. His exceptional skills have made him the go-to person for those involved in such cases, ensuring that his days are always busy. Despite this, his routine remains uneventful.