One Piece All Faces

One Piece All Faces is a visual book series documenting every facial expression made in the manga series. It was be compiled by an artificial intelligence program.

Installments
So far three volumes have been confirmed, each covering two story sagas up to the Summit War Saga. These three volumes were all released simultaneously on July 22.

Layout
Each installment is separated into chapters, with each chapter containing the faces from one volume. At the end of each installment is an interview with the creators of the books (Azuma Kohei, Urushihara Daisuke, Mori Michiharu, and Sugawara Kenta), where they cover the process of capturing the faces and share images of failed attempts. Across the three installments, they explain how they trained the AI step-by-step, among other topics related to issues that occurred during the production process.

Each installment also includes a "find the face" challenge, encouraging the viewer to tweet with #AllFaces when they find it.