After humanity continuously polluted the world with waste, a monstrous being known as a “Corrupter” was born. As these creatures spread and eroded the world, humanity was pushed to the brink of extinction. The strongest agent, Jin Shidō, finally obtained the power to save the world through dangerous human experimentation. However, it was already too late—99% of humanity had already perished. Entrusting hope to the future, Jin entered a long slumber. —And then, 100 million years later. On a newly reborn Earth, Jin awakens and smiles. “…I knew it. It was right to believe in the possibilities of the future.”