Nori Kamitsuki moved from Chiba to Gunma prefecture as he begins to attend high school. There, he has received a warning from his classmate that "No one comes back alive from Gunma," and found more negative information as he looked it up on the net. In the midst of confusion and extreme culture shock, he has gotten himself involved with Gunma's rivals, Tochigi and Ibaraki prefecture.

Amatsuki Meguru is a girl who innocently aspires to be a hero of justice and the cool Kisaragi Sumire who grew up in the strict Kisaragi household... The two girls who are in their 3rd year of middle school end up getting orders from a mysterious hedgehog named Miruku-chan and turn into Twin Angels in order to fight evil! Meguru is always cheerful but sometimes a bit too forceful. Meanwhile, Sumire isn’t accustomed with being around others. Despite their differences, as they work together, they start opening up to each other.