Kutsuna, a 19-year-old Sydney-born actress, was presented with her award at a ceremony in Tokyo earlier this week.
Natto are a popular dish, particularly in eastern Japan, and are highly valued for their nutritional content and health benefits.
Less widely praised are the gooey, sticky texture of the fermented beans.
She is a dual Australian-Japanese citizen.
As Japan’s Natto Queen, an award bestowed by the Japan Natto Cooperative Society Federation, Kutsuna follows in the footsteps of such luminaries as Rei Kikukawa, Aya Ueto, Tomomi Kahala, Kaori Manabe and Akiko Wada.
Shiori Kutsuna Speaking Strine