20th Century Boys is a legendary psychological thriller manga created by Naoki Urasawa. The story follows Kenji Endo, a simple convenience store manager whose childhood memories suddenly become the key to saving the world.

As strange events begin to unfold, Kenji realizes that a mysterious cult leader known only as “Friend” is using a prophecy based on a game he and his friends invented when they were kids. What once seemed like innocent imagination turns into a global conspiracy filled with danger, secrets, and betrayal.

With its complex storytelling, deep characters, and unpredictable twists, 20th Century Boys is widely considered one of the greatest manga series ever written.