Ryuu to Rei: DRAGON & APE

Synopsis

Although he graduated from the Nakano Army School, Juzo failed as an intelligence officer and now he spends his days addicted to opium. One day, a masked man appeared before him; it was none other than Dante, a "walking dinosaur" who had survived into the 20th century. An unprecedented espionage drama between dinosaurs and humans! (Source: Morning, translated)