Full 12-volume series review
Imagine Indiana Jones meets James Bond. A struggling professor of archaeology who moonlights as an insurance investigator and gets out of tight situations using his past experience as a former Special Forces military member, Taichi Hiraga-Keaton would like nothing more than to teach students and excavate ruins, hoping to discover the location of a theoretical Danube civilization in Europe. Unfortunately for him, his kind nature and need for money mean his teaching chances are frequently sabotaged by investigations arising.
Keaton is a likeable dork, though one whose genial, besuited exterior hides a badass proficient in weapons and survival. A running theme through the series is how he's caught between two worlds: biracial Keaton left Japan as a child when his parents divorced and his English mother took him back with her; now he has his own divorce to a Japanese woman and a teenage daughter who lives in Japan. His love is archaeology, particularly a theoretical civilization near the Danube in Europe, but teaching jobs are hard to come by and the insurance company is in London. He left the military, but those same skills save his life, and others', over and over again. Insurance investigation pays the bills, but he's liable to get distracted by fossil and rocks at the drop of a hat.
I have no idea what an actual insurance investigator does, but it's safe to assume the story plays pretty loose with realism. Sure, sometimes Keaton is sent out to confirm that someone died from an accident and not suicide, or that a relic is genuine, but sometimes he's also sent to be a hostage negotiator or to stop a poisoning. As the series goes on, it's clear (or perhaps the writer subtlety added this in a bit later) that Keaton is basically a private detective who gets hired by the insurance company--and sometimes by other people.
The series is fairly episodic, though many stories take several chapters. I enjoyed the character designs, men in particular were usually very easy to tell apart, with distinctive facial features and face shapes.
Though recently released in America, the series was originally released in the late 80s-early 90s in Japan, and was set then. You get a real sense of time and place: not ludicrous designs, but fashions like big shoulder pads for women, boxy cars, etc. The setting also means that Keaton can't rely on modern conveniences like cell phones or even convenient computers all the time. Tracking someone down? You better have maps and hope you run into strangers who don't mind answering a few questions. It adds to the story, of course, but it works well--the story itself doesn't feel old or musty.
Overall, an thoroughly enjoyable series, even if the adventures Keaton was getting into got steadily...not ridiculous, but more high-stakes, as the series went on. I enjoyed the episodic nature because while stories were exciting, it was nice to have a natural stopping point (prime bedtime reading material, but also perfect for when you only have a short/limited time for reading, because you don't have to stop in the middle of a scene).