Ghost in the Shell 1.5: Human-Error Processor (攻殻機動隊/Kōkaku Kidōtai 1.5: Human-Error Processor) is a set of four chapters that were left out of the Ghost in the Shell 2: Man/Machine Interface tankōbon by Masamune Shirow himself. The four chapters are: "Fat Cat", "Drive Slave", "Mines of Mind" and "Lost Past". As with each of the earlier Ghost in the Shell serializations, this was also serialized in Kodansha's Young Magazine.