Keaton is a man who solves problems by understanding people first. Every episode is a complete story that trusts you to sit with its quiet logic, no melodrama, no explanations that insult your intelligence. The OVA version strips away the noise of the TV series and lets each investigation become a small lesson in how to live, delivered by someone who's already learned them the hard way.

Taichi Keaton wears a remarkable number of hats. He is a father, a historian, an archaeologist, a negotiator, a frequent traveler and a former survival instructor, and he earns his living as an insurance investigator for Lloyd's of London. His approach to the job can look unorthodox, yet he delivers results, and each case tends to leave him learning or teaching something along the way. Some people dismiss him as a quack, while those who know him well see him as a master of life. Across fifteen OVA episodes, the show blends adventure with mystery as his assignments unfold.