Master Keaton OVA
Genres: Adventure, Drama, Mystery
Type: OVA, Episodes: 15
Aired: Dec 22, 1999 to Jun 21, 2000
Studio: Madhouse
Source: Manga
Rating: R - 17+ (violence & profanity)
Synopsis:
Taichi Keaton is a man of many talents: father, historian, frequent traveler, negotiator, archaeologist, former survival instructor, and all while working as an insurance investigator for Lloyd's of London. While his methods may seem a bit unorthodox, he gets the job done when needed, but not without a little something to learn or teach in the process. Through all of his adventures, some people call him a quack. Those who know him well call him a master of life...  

(Source: ANN)