Who Am I? is a picture book that gently poses the philosophical question of identity, encouraging readers to embark on a journey of self-discovery. It invites children to imagine and adults to reflect. The book delivers a message that rather than competing with others in a complex society, finding one's own unique traits and living harmoniously with others leads to true happiness. It embodies the artistic philosophy of painter Heo Dal-jae, who emphasizes the importance of spirit over appearance.