When the most prestigious school in the country Nanako High is attacked by an unknown and mysterious enemy, it is up to Katsu: The Worlds Most Intelligent High Schooler and a host of other prestigious students to not only save themselves and the student body as well, but to also uncover the mystery behind this attack as well as the meaning behind the title of Professor. Take a dive into this world where it's not your fists, but your brain that is your most dangerous weapon.