Senran Kagura: Ninja Flash!

Synopsis (en anglais)

Super cute Asuka and her curvy companions appear to be your typical high school students, but they’ve got an outrageous secret: they’re learning the wild ways of the ninja! Get a lesson in action, naughtiness, and sexy slapstick fun as Asuka's gang takes on the toughest (and hottest) fighters in town! Fan service fanatics won’t want to miss a minute! (Source: Crunchyroll)