This version of The Girl Who Leapt Through Time by director Mamoru Hosoda and writer Satoko Okudera is part reimagining, part sequel to the 1967 novel, written Yasutaka Tsutsui. It is one in a long line of adaptations of this novel — there have been live-action movies, multiple TV versions and even a stage play. I once had ambitions to track down and watch every version but that proved impossible. But I like the idea that all the versions of The Girl Who Leapt Through Time are almost a time loop themselves.