Aiko was born in Tokyo, Japan. Since a young age she has loved drawing, painting, and creating stories. At age of 6 she has started learning oil painting. In 1993 Aiko came to the United States where she has studied psychology at Arizona State University. She continued her education at the University of Texas at Austin where she receiving a Ph.D in Neuropharmacology. She worked as a neuropharmacologist and did research on brain chemistry. After working as a neuropharmacologist for years, she followed her heart and decided making picture books. Aiko lives in Ohio with her dog and cat. Aiko also loves gardening and playing cello.