Set in Tokyo in 1998, ten years after the work was first published in 1988, the setting and daily life are not much different from Tokyo at the time. However, walking-type work machines called "Labors," which apply robot technology, have been realized and are used everywhere. Although it's near-future SF, now that the late 20th century (1998), the setting of the story, is already in the past, we can examine the world view that was predicted for the world ten years later in the 1980s. Especially since the 2000s, many of the Labors that appeared in the story have been put into practical use, such as "undersea exploration robots" that are controlled from the outside. Also, devices that mimic the movements of hands and fingers, "motion tracers," have reached the stage of practical application (see Robots). In the work, a massive national civil engineering project called the "Babylon Project" is underway to prepare for the danger of Tokyo being submerged due to rising sea levels caused by global warming. This project involves constructing a giant embankment in Tokyo Bay that also serves as a cross-bay road and reclaiming most of the bay to create usable land. The topic of selling the developed land to solve the land shortage in the Tokyo metropolitan area is also discussed, and the land bubble from the late 1980s has influenced the background of the work. In the story, a direct-hit major earthquake occurred in the city center in 1995, and the reclamation project also serves to process the massive amount of debris generated at that time. Also, because it is a world that is an extension of the bubble era, there is a strong sense of prosperity. In the city center, many reconstruction projects from the earthquake disaster and development projects related to the Babylon Project are underway, which has contributed to the rapid spread and development of Labors. The large-scale project of reclaiming Tokyo Bay naturally puts a great burden on the environment, causing strong opposition movements, mainly from environmental protection groups and fishermen, and even destructive activities called environmental terrorism have occurred. Because the world is set in the 1980s, there are differences from reality. Despite being 1998, the Cold War is still ongoing, and West Germany and the Soviet Union still exist, and there are settings and Labors related to them. The story of this work unfolds until the early 2000s, but there are no descriptions of the reorganization of ministries and agencies that took place during this time, and the old ministry names are used. #Manga #COMIC #Shonen Used in a manga cafe, so there is some age-related deterioration.