One year. That’s all humanity has left.

An unstoppable catastrophe looms over the world, its cause unknown and its end certain. Governments collapse, chaos spreads, and hope flickers like a dying flame. In the midst of it all, six individuals navigate the final days of existence, each grappling with their own truths.

Tachibana Haruki, a cynical high school senior, never cared for the future—until he realized there wasn’t one. Fujimura Aoi, an optimistic dreamer, refuses to waste a single moment, creating a bucket list to experience life to the fullest. Kurosawa Renji, a reckless ex-delinquent, indulges in hedonistic freedom before realizing that some things are still worth protecting. Shiraishi Natsuki, a cold realist, believes that accepting the end is the only rational choice. Meanwhile, Dr. Kisaragi Ryo, a scientist, fights against time to find an answer, even as doubt eats away at him.