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
Veneration of the dead are put on graves year-round as a way to honor the dead. In the United States, many people honor deceased loved ones who were in the military on Decoration Day also known as Memorial Day. Times like Easter, Christmas, Candlemas, and All Souls' Day are also special days in which the relatives and friends of the deceased gather to honor them with flowers and candles. In the Catholic Church, one's local parish church often offers prayers for the dead on their death anniversary or on special days like All Souls' Day. Another important holiday in the United States, Memorial Day,