A virgin girl named Mamori who arrives on an island must compete in battle using special powers only activated through her sexual activity with the other girls on the island.
IMDB: https://www.imdb.com/title/tt5235870/
Following their defeat at the hands of Mirei Shikishima & Mamori Tokonome, Momoko and Aoi Miyasato is shown being brutally whipped as punishment by one of Charlotte Scherzen's followers as she watches. In spite of their apologies and begging, Charlotte only encourages more punishment for their failure.
Clip: https://www.bitchute.com/video/192bCLERoKFj/