Mai Ishihara

The story of the card game follows what happens when "Hairou" portals suddenly open, fusing five different worlds together. As a result, various mysterious "Exceed" powers are awakened in teenaged girls. An academy for these so-called "Progress" girls is built on the isolated Seiran Island in the Pacific.

In this world, Sensha-do (戦車道), the art of tank-combat, is a traditional Japanese martial art for girls. Miho, a girl who just transferred into the Ōrai Girls' Academy in Ibaraki Prefecture, has been ordered by the academy's student council chairperson to join the school team and compete in the national Sensha-do championships.