Keiko was born in Kyoto, Japan. As a child growing up in an art-loving family, she always enjoyed drawing and painting. However, she followed a career working in Japanese government and at two law firms in the US but she always had a desire to become an artist which became a reality in 2003. After learning basic drawing and watercolour painting skills in San Diego where she now lives, she illustrated a book written by her father. She is largely self-taught and is sought after worldwide as a workshop tutor and demonstrator. Her paintings have been displayed at many exhibitions across America, Asia and Europe. She has had her paintings published in leading art magazines in the US, Europe and Japan and has written and self-published six art books. She has judged paintings in exhibitions from the Transparent Watercolour Society of America, the International Watercolour Society, and the San Diego Watercolour Society. She is an official Ambassador for Winsor & Newton.