If you could have any wish granted, what would you wish for? Ten years ago, when Hoshimiya Eiji encountered a mysterious being, his wish was granted--bringing about world destruction. Ever since then, he's kept his powers as an Order a secret, living an ordinary life in the aftermath, devoted to his ill sister, Sena. One day, his class gets a transfer student that finally draws his eye--Kurenai Rin. Yet once they're alone together, she tries to kill Eiji for what he did ten years ago, forcing his story into motion. But what is the true identity of his power that destroyed the world?