Naoki Urasawa's 21st Century Boys, Vol. 2 (2) (20th Century Boys);

The climax of our story is finally at hand! Mankind faces a crisis, and Kenji is hustling to save the world and the people he loves. But he also must solve the mystery of the Friend. Who is he and why did he become evil? The answer is tied to a memory Kenji has from when he was a twentieth century boy.

Reads R to L (Japanese Style).