Kaori Mizuhashi

At Fumizuki Academy, students use summoned beings to do battle against their classmates. While Class A is the best, the kids in lowly Class F are the worst on campus - and they're about to find themselves facing the school's top talent!

One day, Mukoujima Takurou, a boy in high school who loves fishing, catches a pig tailed mermaid called Muromi-san who speaks in the Hakata dialect. She comes to visit Takurou often, along with her fellow mermaids Sumida-san, Fuji-san, Levia-san, Hii-chan, and even some other fantastical creatures such as Yeti and Harpy!

The Neuroi, a large and dangerous alien race, still roam parts of the world leaving destruction in their path. The Strike Witches-a group of girls with extraordinary powers, formidable weapons, and advanced aircraft appendages-have made great strides against the Neuroi. But the war against them still rages on.