Pretty Guardian Sailor Moon Cosmos The Movie

Usagi Tsukino and her friends are living peaceful lives as ordinary high school students. Mamoru Chiba, Usagi's boyfriend, is headed to America to study abroad. At the airport, after Mamoru proposes to Usagi, he is then mysteriously extinguished by someone's hand. Unable to accept Mamoru's disappearance, Usagi hides her memory of that event. Meanwhile, Shadow Galactica, led by Sailor Galaxia, as well as Sailor Starlights appear in front of Usagi.