Fantastic Children (Anime TV)

For hundreds of years, the same group of children have been spotted numerous times. By all the photographs and paintings, they seem never to have aged in all this time and they act more like adults than like children. They seem to have an agenda of their own, searching always for one person, but, never seeming to find that person for those hundreds of years. Every time they come close, they find the same image of a crescent moon behind a mountain.

One day, not so long ago, an orphan known as Helga escapes from her orphanage and runs across Toma, a talented young man who helps aid her younger friend in their escape and tries to hide her at his house. Though she is caught and returned, he becomes curious and tries to find out more. Among other things, he is shown some strange drawings that she has been drawing since she was young, though the head of the orphanage does not approve of them. These drawings are the same ones that the fantastic children have found so many times in their searches, though Toma knows nothing of this. Is she the one they are looking for? Why have they been looking for one person for hundreds of years and what is their secret that they have lived, apparently ageless, for so long?