Mua is a Korean picture-book creator who enjoys transforming the children, neighbors, and familiar places encountered in everyday life through imagination, words, and pictures. Her first original picture book for children, Secret Friend, grew from her experience of passing through the COVID-19 pandemic with her daughter. She continues to explore children’s emotional worlds through animal characters and gently observed daily moments. In Daddy, When Will You Come?, Mua turns her attention to war and displacement, using a bear family to make the pain of separation accessible to young readers while preserving a child-centered sense of hope, endurance, and longing for reunion.