Cipher AcademyAngou Gakuen no Iroha; 暗号学園のいろは; Cipher Academy; Cipher Academy's Fundamentals; Iroha from the Crypto Academy; Ироха из Крипто Академии

Iroha is an average student newly enrolled in Cipher Academy, a Spartan school where students must crack code after code after code with barely enough time to catch their breath! Then a mysterious person named Kogoe gives Iroha an unusual pair of glasses with a crazy secret behind them! (Source: MANGA Plus)