After the events of Tankery End and the event's Rise of An Emperor, it is time to declare a Civil War after both our heroes return to their homes and school but sooner or later two heroes will face each other and so will their allies... As the Japanese learned, there are two Tankery sports in America .... The League and The Association as they question remains which sports organization will stand.

Witness the final story of The Yankees in tanks after the events of Rise of an Empeoer it is time for the Houston family's final mission where the Children of Big Boss Aiko and Emily Houston take up their father's mantle as one they are questioning to each other who will take the title of Boss? and carry the Houston name? as old Enemy's returned wanting to finish what has started.

Before and after the S-Rank match between Davy Crockett High and Groton High School, a special tournament was organized between the American Tankery League and the Sensha-Do Federation, allowing various high school teams to compete against each other. Two individuals stood out, each with their own motivations. In the Japanese Sensha-Do, one aspired to make a name for themselves. Meanwhile, in the American Tankery League, another sought to let go of the past and forget who they once were at Vermont Tankery Academy.

After the Oshima Island Incident event with the defeat of Anderson and the old School Vermont Tankery Academy and preventing the disbanded Tankery sport in America, our characters return to their home country so they can finish their school year after missing half of the fall semester however a new threat lurks as Houston knows someone will be coming after them.... There happened to be three S Rank Schools and the one leading the big three was a Boy who earned the League title.... Emperor...

Sensha Do is a and always is a Japanese tradition after the finals in all the girls tankers school soon later found out that in the west like America and other countries have their different version of this sport having not like the style on how the west made their own tradition sport is that they challenge the schools in the west for the shut-down project of their tanker sport mostly on America as they will have a small war game. Somewhere in Pacific's where the U.S and Japan set their small game but for the both side of America and Japan there is one question that everyone still wonder...... Who is the Best Tanker?

Witness a dreadful incident that took the lives of five thousand High school boys in the match of Tankery in America