The mighty clan of Aqua Force was patrolling the seas of Cray when they encountered the Abyssals. To combat the danger, they sent out their elite troops to an expedition in their home world. What they didn't expect was that they are now working together with the ship girls. How will they get along?

While stranded in the era of the Three Kingdoms, Hajime Nagahide needs to fight his way back home by unifying the world with the rising Shoku-faction. However, the battles and challenges he will face will not be decided by normal means. No, his fate and that of many others will be decided with the game he loved: Battle Spirits. [ON HIATUS]