This anime is about the life of a Japanese guy named Nikita. His whole destiny is a series of tragedies, mixed up with boring student life. His parents were killed in an accident, the boy miraculously survived, and now lives with his half-sister. He also has a beautiful girlfriend named Ren. Long-legged, with bright, copper hair beauty, makes him dream about her all day long. However, soon Nikita begins to feel something wrong in the behavior of his girlfriend... And for some reason he begins to think that he saw her a long time ago... just before the accident, and as mature as she is now...