Shigehiro Kasahara is a prominent Japanese knife sharpener from Sakai, a city known for its rich blacksmithing tradition.

Together with blacksmith Yoshikazu Ikeda, he creates knives known for their exceptional sharpness and craftsmanship. The knives are made with a core of Shirogami #2 steel, known for its ability to achieve a fine and durable sharpness.

Kasahara has received recognition as a master craftsman from the Japanese government and has won several awards in sharpening competitions. His knives are sought after by both professional chefs and enthusiasts who seek precision and quality in their kitchen tools.