Fantastic Children(2004)

Fantastic Children is an anime series following a centuries-old mystery spanning across Europe. A group of white-haired children, eternally trapped at age eleven, have appeared throughout history—always mature beyond their years, never aging, and possessing supernatural abilities. Their singular obsession is finding a girl, their only clue a photograph bearing a crescent moon symbol. In 2012, an athletic teenager named Tohma becomes entangled in their enigmatic quest, discovering connections that bridge the past and present. As the investigation deepens, Tohma uncovers the dark secrets binding these immortal children together and the truth behind their relentless five-hundred-year search.