Tokyo nuclear deposit

The Tokyo nuclear deposit, Tokyo Nuclear Programme (東京核計画 in Japanese) or Tokyo nuclearisation is the large deposit of nuclear weapons located in Tokyo. As a result of the Akuma conquering large portions of Asia, as well as the 2026 invasion of Japan, the Japanese began developing nuclear weapons as fail-safes in major cities to prevent the Akuma from creating more breeding grounds similar to those in Africa. The programme was greenlit in 2005, around the same time the JDEU began losing funds; funds were typically funnelled into the nuclear programmes. Funding increased more and more as the Akuma began spreading further east, with most major cities having nuclear fail-safes large enough to destroy both the city and several kilometres around it. Tokyo is most notable as it has the largest nuclear deposit, large enough to destroy itself and roughly thirty to forty kilometres around it. Only two other deposits are of similar size, in Nagano and Takasaki; this is to create a "nuclear Maginot Line" and would somewhat ensure that the Akuma cannot pass through to human sanctuaries in the north.

According to a 2031 law, nicknamed the "Suicide Pact" (also where the term "nuclear Maginot Line" originated), should any of the three cities come under attack, all are to be evacuated if possible and the nuclear deposits remotely activated. The decision cannot be changed or interrupted by the Minister nor by the Ministry of Defence.

Detonation of the Tokyo deposit
In 2046, major Tokyo installation Alpha 17-4 was invaded by a large Akuma force, resulting in the evacuation of surviving personnel, and the subsequent detonation of Tokyo's nukes. The invasion was so sudden and unexpected that the required "Apocalypse Protocol" (黙示録プロトコル in Japanese) message was almost not sent to Nagano, Takasaki and the top commanders of the JDEU. Survivors were given ample time to escape (roughly 20-30 minutes) from the extent of the blast zone, and all three deposits detonated simultaneously at 22:41 Tokyo time.