It's been 18 years since Rin died. Alisa, who is Sei and Lou May's daughter, lives with her mother, her brother Shinji, and Ken in Hawaii. Shinji is Ken and Lou May's son. Shinji knows Alisa isn't Ken's real daughter, but Alisa doesn't. Alisa sometimes sees a phantom boy. One day, she sees a boy point to the sky, where she sees a plane. By the...