Endo Kenji grew up in late-1960s/early-1970s Japan, at a time when American phenomena, notably the space race and the era of Woodstock, were resounding around the world. An avid reader of manga who often saw apocalyptic scenarios playing out, he always responded with the cry of "I would fight!" During this time, he and his friends made up a scenario for world conquest in order to play heroes.
Flash forward to 1997, a time where Kenji has taken charge of his families liquor shop and turned it into a convenience store. He is now raising the daughter of his sister, Kiriko (who disappeared immediately after leaving her daughter to Kenji), and living a fairly ordinary life. However, after events from the prophecy he made up earlier begin to come true, he learns of an evil organization, led by a masked man called "Friend", which is using his plans to conquer the world. As the organization's hold on the government strengthens, he becomes a wanted man and lives on the streets, continuing to (covertly) oppose Friend, partially through terrorism and partially through a protest song he wrote (named "Bob Lennon").