Choose the world or choose her—. Ordinary high school student Shiraishi Godo harbored a \"secret.\" He possessed memories of a past life. In a world different from this one, he was a \"hero\" who saved humanity. However, that was a story of his past life. In this life, he was supposed to lead an ordinary school life—until the arrival of transfer student Mai Shiina turned everything upside down. \"—I can\'t live without you!\"
