Reiji’s life had been a monotonous cycle of gray, mundane days ever since he lost his memory. He found his existence lacking purpose and direction, merely existing rather than truly living.

However, one night, he had a nightmare where he encountered a mysterious girl determined to kill him. In fact, he was killed. This event began to transform his life, both in his reality and his nightmares.

This was the beginning of his future and the returning point of his past.