Ghost in the Shell 1.5: Human-Error Processer

Ghost in the Shell 1.5: Human-Error Processer (攻殻機動隊1.5 HUMAN-ERROR PROCESSER) 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.

Plot
The story continues following Section 9 and their covert ops investigations.

Fat Cat
1991: A young woman calls Section 9 to investigate her father's recent strange actions, and he turns out to be operated (through his electronic brain) by remote control.

Drive Slave
1992: Chroma (a.k.a. the Major) returns when her bounty hunt collides with Section 9's witness protection case.

Mines of Mind
1995: A cyber-date gets interrupted by an arms dealer's murder, which leads to a cyborg shoot-out at the marina and the reappearance of an agent's old friend.

Lost Past
1996: The investigation into a kidnapping gone wrong leads to a covert operation by another government department into Okinawa terrorism.

Japanese Editions
The first collected Japanese edition was published in 2003 and is 184 page long. It contains a Booklet, a CD-ROM that features the full stories, and adds music to the manga scenes. It also has a screen saver.

English Editions
Announced at the 2005 San Diego Comicon, the series was released as 8 individual comic-sized issues before being collected in trade paperback format. This was the first of the Ghost in the Shell manga released in the U.S. to read right-to-left. The first issue came out 2006-10-18. The four original titles were each split into two each, to make up the 8 in this series.

The trade paperback was released on 2007-10-10.