Naoki Urasawa'S 20Th Century Boys, Vol. 20

This is the story of a group of boys who try to save the world! As boys, Kenji and his friends came up with a bunch of stories about an evil organization bent on world destruction. As adults, someone is now turning their fantasies into reality!
Humanity, having faced extinction at the end of the 20th century, would not have entered the new millennium if it weren't for them. In 1969, during their youth, they created a symbol. In 1997, as the coming disaster slowly starts to unfold, that symbol returns. This is the story of a group of boys who try to save the world.
There once was a hero who stood against evil. He sacrificed himself to save the world, and everyone believed he died on Bloody New Year’s Eve. But eighteen years later, when the entire world is under the control of the enigmatic figure known as the Friend, the hero comes back! Kenji is back and is heading for Tokyo, where the Friend is preparing his next horrific plan. Meanwhile, Kanna and the rest of Kenji’s group make their move toward the final battle! Could it finally be time for justice to rise once again?