Taken from Untuned Translation Blog:
The world is not beautiful, therefore it is. Wait, wrong series.
Kino is an ordinary high school student enjoying an ordinary life in an ordinary world. But when a mysterious entity transforms her classmates into demons and besieges the school, it’s up to her to transform into Mysterious Bishoujo Gun Fighter Rider Kino and bring peace back to the city!
Accompanied by Hermes the talking cell phone strap, Samoyed Mask the handsome but highly incompetent self-proclaimed protector, and the ever-mysterious Detective Wanwan, Kino sets out to conquer every restaurant in town and maybe save the world if she has time to spare.
A spin-off of the acclaimed Kino’s Journey series, Gakuen Kino is a lighthearted comedy where nothing is sacred—not even the original series.