This page contains information regarding a myriad of terms used in the story. It will update every time new information is revealed. A reminder at the beginning of every story will be implemented if there is.

The schools and their ships are more or less similar to the girls. So just base your thoughts on that.

The Armed Arts

Senso-do/Armed Arts Sports

Sensa-do or the Armed Arts Sports are sports and martial arts that incorporate the use of less-lethal versions of weapons of war to simulate combat under different scenarios. Its roots started in the early 1920s in Japan and Germany with the inception of Sensha-do/Tankery and Hohei-do/Infantry Arts. With the number of surplus equipment leftover, people found ways to make them useful in a more peaceful setting. These exhibitions grew in popularity even in the post-war nations as they gave a chance for youth to develop their technical skills while training their mind and body. It also allowed them to rebuild the

However, Tankery and Infantry Arts were also used as propaganda tools in the interwar period and served as a tool for training the next batch of warfighters. But when war did arrive, all activities were postponed. Only until the war ended did Tankery and Infantry Arts became active again.

But the struggles of the sports do not end there. Men and women of both sides being barred from participation due to gender barriers gave rise to hostilities between both genders. And it only increased when Sentoki-do/Aviation Arts were introduced as an all-boys sport. In order to prevent any more violence, the MEXT directly intervened which led to the formation of the Armed Arts Association which created a common area by making all armed sports co-educational. Both genders have since then been allowed to participate in whatever sport they please. Many years have passed since then, and now in the modern world, men and women are free to enjoy any of the four Armed Arts in peace.

Equipment used in these sports are all less lethal versions of weapons of war. All equipment or modifications to them must first be granted approval for use by the governing of the specific armed art. Strict measures must always be ensured to minimize the risk of an accident to as little as possible. However, regardless of the measures implemented, accidents are still bound to happen.

Sensha-Do/Tankery

Sensha-do or Tankery is a martial art that has a history since the early 1920s. There was a surplus of tanks produced after World War 1, so many were exported to other countries as military hardware, but as time went on and the technology became obsolete, many were sold to the public. Some of these tanks would be acquired by various girl's schools that thought that the idea of armored vehicles crewed by women and engaging in simulated combat was an interesting concept, and thus the foundation of Sensha-do was laid. It then rose into popularity and developed well despite the pause in its practice during the late-thirties to mid-forties during the country's imperialistic conquests and the outbreak of World War 2.

Sensha-do remained a girls-only sport for decades until the sixties when boys started privately organizing their own teams and competing with one another. And eventually, boys were officially recognized as practitioners of the sport and were allowed to compete in their own official games and tournaments.

Girls and Boys Sensha-do are exact copies of each other with the only difference being the genders of those practicing. Despite that, cooperation between the two is few and far in between. The most action boys and girls usually have with each other is directing the other back to their designated grounds when they get lost during a match. However, there is little to no conflict between the genders; they simply wish to keep to themselves more than anything. There have been matches with boys and girls together, albeit organized by the students themselves and are not sponsored by any major organization, and are privately enjoyed and/or posted on the internet.

The overseeing body for Tankery in Japan is the Japanese Sensha-do Federation.

Hohei-do/Infantry Arts

Hohei-do or Infantry Arts is an armed sport made to mimic the ways of infantry. From small-scale squad battles to full assaults on other school grounds, the Infantry team tackles anything that would require a rifle to solve. Members of a school's Infantry team also double as its security for its other Armed Arts facilities against rival schools who would launch reconnaissance or assault operations. Its history is just as old as Sensha-do/Tankery with similar roots thus their close ties to one other.

Just like in Sensha-do, they use specialized equipment and ammunition. The guns feel and handle similar to a real firearm but the modifications done will cause it to malfunction if real ammunition is used. The ammunition used is either rubber or neuro-stim bullets, the latter are essentially darts that simulates the pain of real gunshot wounds when it hits the body, it only lasts a few minutes and is incapable of inflicting permanent injury. Melee weapons like knives and bayonets are also used, but their edges are blunt, and they function like a taser.

The overseeing body for this sport in Japan is the Japanese Hohei-do Authority.

Hikōki-do/Aviation Arts

Hikōki-do or Aviation Arts is an armed sport made to mimic the ways of aerial combat. It can range from simple dogfights to assaults on ground targets with bombers and other strike aircraft. They handle anything that requires aircraft to solve. And this is not limited to combat, the members of the Aviation Arts team are also be used as transport pilots for their school.

Its history dates back to the late 1950s when the Sensha-do officials were still adamant about keeping it an all-girls sport. So, in retaliation to this, Sentoki-do was organized as an all-boys sport to counteract the girls. For the next two decades, the two Armed Arts would share a harsh and hostile relationship with one another until the MEXT forced each other to open up to the opposite gender to quell tensions. It worked and both sports share a peaceful relationship with one another.

The aircraft used in matches have been modified to meet certain requirements. For armaments and combat: The ammunition used is made from soft materials like rubber or even fragile ceramics which shatter upon impact, different versions of ordnance that had been optimized to be used against a variety of targets, advanced hit-sensors across the airframe that determines the aircraft's state, and a red smoke from a dispenser located in the tail section to signify that an aircraft has been 'shot down'. In addition to this, eliminated aircraft will fly out of the combat zone or return to base. For safety features: aircraft have been armored to an extent to increase their durability, aircraft are equipped with transponders and GPS tracking devices, survival kits and communications equipment for pilots, and finally an ejector seat for the pilot, however, the last one does not apply to all aircraft. Each of these modifications is done without changing the performance of the aircraft in any way.

The overseeing body for Aviation Arts in Japan is the Japanese Aces Authority.

Gunkan-do/Naval Arts

Gunkan-do or Naval Arts is an armed sport made to mimic the ways of naval combat. Battles range from skirmishes with small patrol boats, to full-scale naval combat with ships. Naval Arts also handle any other maritime-related issues like ship-to-shore or ship-to-ship transport as well as coordination with a school ship's Naval Studies program in any other matter.

Naval Arts is the newest of all of the Armed Arts with history only dating back to the mid-1990s. It started when students from multiple schools set up a skirmish in a lake with small torpedo boats which unexpectedly drew a lot of attention. So soon after, another armed sport was born.

However, despite local and international tournaments being organized, Naval Arts are still in the experimental stages. That is why the biggest vessels used in the sport are destroyers; any vessel with a displacement above 3800 tons is currently prohibited. Patrol and Torpedo boats, and even submarines are allowed, however. Special ammunition and ordnance are used, carbon lining and added armor across the hull for extra protection, and damage sensors across the hull for its referee function, just like in the other Armed Arts. A 'disabled' vessel will fly a big white flag on its mast and will be forced to sail away from the combat area.

The overseeing body for Naval Arts in Japan is the Japanese Gunkan-do League.

Armed Arts Association

The Armed Arts Association (AAA) is the head organization for all Armed Arts organizations in Japan. They handle all sports affairs such as games and tournaments both domestic and international. But their main purpose is to preserve peace and harmony among the four sports.

The Schools and Universities

Hakodate Boys Academy

Hakodate Boys' Academy is an all-boys school based in Hakodate City, Hokkaido Prefecture, Japan. And despite the distance, they are partnered with Ooarai Girls' Academy.

The school was one of many established right after the Second World War in order to produce the country's next generation that would help rebuild it from the shame of war. And just like many schools, they adopted Armed Arts sports once each had been made available. However, unlike most schools, they chose to field equipment from many different nations instead of one, except maybe for their Hohei-do team which closely resembles the United States Marine Corps, gaining the nickname of Hakodate Marines. They also prided themselves in unconventional tactics by the standards of other schools.

Despite many things, Hakodate possessed one of the most successful teams in the 1970s and 80s, surpassing even Kurowashitsume and the mighty Kanagawa Style at one point. However, it all ended in the 1990s when the teams were disbanded. The worst of them was the Gunkan-do team, being only active for a few months before being shut down. The official reason for shutting down the teams was financial reasons, but there are those who speculate on a larger conspiracy behind the closure.

The school uniform is a black blazer with gold buttons, over a white button-up shirt, black pants, and matching shoes. The tankery uniform consisted of a dark blue jacket, with a white collar that has a red stripe, and black cuffs. The uniform also had a white undershirt, black pants, matching tanker boots, and a dark blue side cap with red linings and the Hakodate emblem on his head. The commander wore a dark blue M43 field cap with the school logo instead as the only difference.

The Hakodate Boys' Academy school ship is based on the former US Navy aircraft carrier USS Yorktown CV-5. It is eight thousand meters long and can accommodate thirty-five thousand people. Its home port is in the city of Hakodate on the island of Hokkaido, northern Japan.

St Victoria Boys' College

St Victoria Boys' College (SVBC) is an all-boys school located in Yokohama City, Kanagawa Prefecture, Japan. They are the partner school to St Gloriana Girls' College and are also themed after Great Britain, using only equipment from that nation. The school was established by wealthy British nationals who came to Japan in order to spread British culture and society in the country. SVBC is a school that prides itself in its Armed Arts programs, being one of the powerhouse schools but still marginally weaker compared to Kurowashitsume and Pobeda. That is why it has been a long time since they won a tournament.

Their school uniform consists of a blue sweater with the school logo over a white button-up shirt with a black necktie, black pants, and matching leather shoes. Their tankery uniform consisted of a red jacket with black highlights and gold buttons, shoulder epaulets, a white undershirt, a black necktie, black pants, and matching boots. The commander wears a Sam Browne belt as the only difference.

The SVBC school ship is based on the former Royal Navy aircraft carrier HMS Victorious R38 in her post-war refit with the angled flight deck. She is ten thousand five hundred meters long and can accommodate ninety-five thousand people.