The series takes place at the eponymous Cipher Academy, a former
all girls' military academy focused on the study of
cryptography, telling the story of Iroha Irohazaka, the sole boy in his class. While dealing with a spartan homework puzzle on his first day in class, Iroha comes across Kogoe Horagatoge, a student from a different class on the run from Kyora Toshusai, a fellow student of Iroha's and the heiress to a weapons manufacturer. Iroha helps Kogoe hide, and she gives him a pair of glasses embedded with technology that allows him to see the "hints" to codes. After Kyora bullies Iroha into a cipher-based battle and Iroha uses the glasses to win, he is thrown into a conspiracy involving 50 billion morg hidden at the academy—a stash of
cryptocurrency so valuable that it could end half the wars in the world, or, conversely, double them. ==Publication==