When Studio Ghibli adapted Howl's Moving Castlefrom Diana Wynne Jones' whimsical novel, it proved just how magical the fusion between literature and animation could be. Ghibli took the book's rich inner world and gave it vivid life, adding its own signature charm and environmental themes. Since then, the studio has continued to dabble in adaptations, from The Secret World of Arrietty (inspired by The Borrowers) to When Marnie Was There. These literary-inspired films reflect the studio's lasting love for powerful storytelling across mediums.