"The Half World" is a fantasy novel by Hiromi Goto that explores themes of identity, belonging, and the struggle between good and evil. The story follows a young girl named Melody who discovers a hidden realm called the Half World, a place that exists between the living world and the afterlife. In this realm, she encounters various creatures and faces challenges that test her courage and resolve. As Melody navigates the Half World, she learns about her family's past and the sacrifices made to protect her. The novel combines elements of Japanese mythology and urban fantasy, creating a rich and immersive narrative that highlights the importance of self-discovery and the connections between different worlds.