, also known as (also written Eifuku-mon In), was a celebrated Japanese poet of the Kamakura period, and a consort of the 92nd emperor, Fushimi. Her father was the Chancellor Sane-kane. She was a member of the , and her work appears in the "Gyokuyōshū".
She became empress in 1288, and though she had no children of her own, she adopted Go-Fushimi. In 1298, her husband abdicated the throne. On 23 June 1316 (5th year of Shōwa), she took tonsure as a Buddhist nun and was given the Dharma name Shin'nyo Gen (真如源).