Sensha-Do is a famous martial art of Japan. In general it is a female sport and it is blooming since decades. Howewer, the boys schools are getting fed up with the huge amount of rules of the Japan Sensha-Do federation which are discriminating them. The dissatisfaction is increasing until the bubble bursts.

Bismarck, a battleship of the Fleet of Fog found and lost someone very close to her. Her way brings her to the Pacific where she finds help to find that special someone.