(English) Lee Hae-ry is a picture book author and illustrator. She studied visual design at Hongik University and the Graduate School of the same university. She wrote and illustrated On a Rainy Day and Run, and illustrated My House Full of Monsters, No One Knows Who I Am, Holes in Our Body, Summer Vacation, A Prickly Water Lily Leaf Said, and Guess Who?. Her works have been translated in many countries and gained praise internationally.