A sci-fi love story set in a world where digitization of memory made physical death obsolete. A world where memories can be stolen and altered, and replaced in a new human body. Kaiba wakes up in a room without knowing who he is. He has a pendant with the photograph of a woman he does not remember. After being attacked all of a sudden, he has to flee to space, meet various people, and rediscover the world. "Even without my memories, I love you...".