Yoshihiro Saimaru

Yoshihiro Saimaru (才円 慶止) is a Japanese mechanical designer and illustrator known for his extensive contributions to the plastic model and anime industries. He has worked closely with major hobby companies, most notably Kotobukiya, where he has played a key role in designing for popular model kit lines such as Frame Arms and Hexa Gear. His work is characterized by a high level of mechanical detail and functional realism, often bridging the gap between sci-fi conceptualization and buildable plastic models.

In the realm of anime and media, Saimaru has provided mechanical designs for several projects, including the Frame Arms Girl series, where he helped translate the original concept art into detailed mechanical components. He is recognized for his ability to design intricate interlocking parts and versatile weaponry systems that appeal to adult modelers and collectors. Beyond mechanical design, he has also contributed to various hobby magazines and art books, sharing insights into his design process and the technical aspects of transforming 2D designs into 3D products.