Shadow Galactica been played by two actresses, Haruko Yamaguchi and Megumi Wakamatsu. and appear only in Act 48 of the manga. Sailor Lethe is named for a naiad in Greek mythology, and for a river of the Greek underworld where dead souls go to forget their past lives before being reincarnated. Sailor Mnemosyne is named for the Titaness of memory, the mother of the muses, as well as another river in the underworld which brought remembrance and omniscience. Sailor Lethe has an attack called "Galactica Myosotis Alpestris", which she used to attack Usagi. Myosotis alpestris is the name of an alpine species
The Brief History of the Dead itself expands and contracts to accommodate the recently dead or the death of the last people to remember them. On earth things have continued on the trajectories predicted at the beginning of the century: The polar ice caps are melting and biological terrorism is a major societal concern. However, the Coca-Cola Company is trying to make the best of both developments by planning to use water from Antarctica in its soft drink; they use publicity stunts which exploit people's fears in order to build brand interest. As part of their latest publicity stunt, they send a team of scientists to