His approach is defined by a fascination with foreign customs and technology. In his series on the Five Nations, he depicted American and European figures with an eye for specific details like heavy woollen coats or sailing ships. Prints like "Dutchwoman with Leopard" show his interest in the exotic animals brought by traders. He also produced imaginary views of distant cities like London. These prints were based on imported lithographs rather than personal travel. This mixture of direct observation in Yokohama and creative interpretation of the West creates a unique visual style.

Modern collectors value Yoshimori for this intersection of Japanese tradition and global history. His prints are records of the Bakumatsu period. They show the transition from the Edo era to the Meiji Restoration. The compositions are direct and informative. They offer a perspective on how Japan viewed the West during its first encounters. These prints fit well in contemporary spaces because they combine the classic woodblock aesthetic with subjects that feel international.