Seigi, a martial arts trained middle schooler, often feels driven to protect the weaker people around him. One day, he defends a homeless man against some punks, and the man gives him a strange tattoo on his palm in return. The tattoo is a secret weapon produced in the arms race between America and the Serinistan Kingdom. Seigi finds himself in over his head when a powerful girl, using the same secret weapon, violently pursues him in order to retrieve it. His skill at martial arts may not be enough to keep him alive, but will he be able to learn how to trigger the power of his tattoo in time? (Source: MU)

In 1930, two years after the events of So Long, My Love, the Great Demon War results in the annihilation of the Imperial, Paris and New York Combat Revues' Flower Divisions. With Earth at peace and the revues' actions becoming public, the World Combat Revue Organization is formed with several international divisions; a biennial international Combat Revue tournament has been organized. Ten years later in 1940, Imperial Japanese Navy captain Seijuurou Kamiyama is assigned as the captain of the new Imperial Combat Revue's Flower Division in Tokyo, which consists of: Sakura Amamiya, a swordswoman and new recruit; Hatsuho Shinonome, a shrine maiden and the most popular actress; Anastasia Palma, a newly-transferred Greek actress; Azami Mochizuki, a ninja prodigy from the Mochizuki clan; and Clarissa "Clarise" Snowflake, a Luxembourgian noblewoman. The division once again faces a new demon invasion and participates in the upcoming tournament—while trying to keep their home at the Imperial Theater open. (Source: Wikipedia, edited)

The story takes place during a conflict between the Krakozhia Dukedom and the Grania Republic. In the midst of the fighting, a savior appears to the Krakozhia Dukedom, and it is a high school student named Yano Souhei. Two female soldiers, First Lieutenant Ruto and Second Lieutenant Haruka, appear in tanks to intrude on Souhei's everyday life, followed by the enemy soldier Shachirofu, all of whom use firearms without hesitation at his house. (Source: ANN)

Tanaka Tetsuro is excited at getting a full scholarship at a new high school, far away from his family. What he does not know is that he will be the only boy in an all girl school, and that there is a girl head-over-heels in love with him, waiting for his arrival. But his special friendship with the very cute and dynamic Asuka also causes him to get into a lot of trouble with the powerful student council leadership, as they are at open war with Asuka and her five friends, a group of super amazon warriors called the Koi Koi Seven.