In the school of Daimon High, martial arts and starting fights are the biggest ways to boosting your grades, which is excellent news for Ryoko Mitsurugi, the school most popular kendo beauty. Her popularity and fame spark an idea for the heads of the schools, K-Fight! — a system where the best fighters for each school challenge each other to one-one or all out battle royal. However, soon the K-Fights start to draw unwanted interest, some not even of this world.