is a Japanese manga series written and illustrated by Naoki Urasawa. It was originally serialized in Shogakukan's seinen manga magazine Big Comic Spirits from 1999 to 2006, with the 249 chapters published into 22 tankōbon volumes. A sixteen chapter continuation, titled , ran in the same magazine from 2006 to 2007 and was gathered into two tankōbon volumes. It tells the story of Kenji Endo and his friends, who notice a cult-leader known only as "Friend" is out to destroy the world, and it has something to do with their childhood memories. The series makes many references to a number of manga and anime from the 1960s–1970s, as well as to classic rock music, its title being taken from T. Rex's song "20th Century Boy". A trilogy of live-action film adaptations, directed by Yukihiko Tsutsumi, were released in 2008 and 2009. The manga was licensed and released in English by Viz Media, and distributed in Australasia by Madman Entertainment. The films were also licensed by Viz in North America and by 4Digital Media in the United Kingdom. 20th Century Boys has received critical acclaim and has 36 million copies in circulation, making it one of the best-selling manga series of all time. It has won several awards, including the Shogakukan Manga Award, the Kodansha Manga Award and the Seiun Award. Plot In 1969, young boys Kenji, Otcho, Yoshitsune and Maruo build, in an empty field, a hideout they call their secret base, in which they and their friends can get together to share manga and stolen pornographic magazines and listen to a radio. To celebrate the event, Otcho draws a symbol for the base that would represent their friendship. After their friends Yukiji and Donkey join the gang, they imagine a future scenario where villains would try to destroy the world, and in which the boys would stand up and fight; this scenario is transcribed and labelled . In the late 1990s, Kenji is a convenience store owner, finding solace in his childhood adventures as he takes care of his baby niece Kanna and his mother. After Donkey is reported to have committed suicide, Kenji stumbles upon a large cult led by a man known only as "Friend". With current events beginning to resemble actions from the Book of Prophecy, Kenji and his former classmates try to remember who knows about the book. They find more events unfolding such as