20th Century Boys

*20th Century Boys* is a Japanese manga series by Naoki Urasawa that blends mystery, science fiction, and conspiracy thriller elements. It follows a group of childhood friends who, as adults, confront a global threat tied to a mysterious symbol they created in childhood. The story explores themes of friendship, nostalgia, and the impact of past actions, revealing how a seemingly innocent childhood game evolves into a real-world conspiracy. Through intricate plotting and complex characters, the series questions the nature of good and evil, identity, and the power of collective memory across decades.