Tokyo Metropolitan Police Department

Sakuradamon Station (桜田門駅, Sakuradamon-eki) is a subway station on the Tokyo Metro Yurakucho Line in Chiyoda, Tokyo, Japan, operated by the Tokyo subway operator Tokyo Metro. It is numbered Y-17.

The Sakuradamon Incident (桜田門外の変, Sakuradamon-gai no Hen, or 桜田門の変 Sakuradamon no Hen) was the assassination of Ii Naosuke, Chief Minister (Tairō) of the Tokugawa Shogunate, on March 24, 1860 by rōnin samurai of the Mito Domain and Satsuma Domain, outside the Sakurada Gate of Edo Castle.

The Ministry of Justice (法務省, Hōmu-shō) is one of the cabinet level ministries of the Japanese government. It is responsible for the judicial system, correctional services, and household, property and corporate registrations. It also serves as the government's legal representatives. At the top of the ministry is the Minister of Justice, a member of the Cabinet, who is chosen by the Prime Minister from among members of the National Diet.

The Ministry of Internal Affairs and Communications (総務省, Sōmu-shō, also MIC) is a cabinet-level ministry in the Government of Japan. Its English name was Ministry of Public Management, Home Affairs, Posts and Telecommunications (MPHPT) prior to 2004. It is housed in the 2nd Building of the Central Common Government Office at 2-1-2 Kasumigaseki in Chiyoda, Tokyo, Japan. The Ministry oversees the Japanese administrative system, manages local governments, elections, telecommunication, post, and governmental statistics. The Minister for Internal Affairs and Communications (総務大臣, Sōmu Daijin) is appointed from among the members of the cabinet.

The Fire and Disaster Management Agency (消防庁, Shōbōchō) (FDMA) is an external agency attached to the Ministry of Internal Affairs and Communications in Japan.

The Intellectual Property High Court (知的財産高等裁判所, Chiteki-zaisan kōtō-saiban-sho), sometimes abbreviated IPHC, is a special branch of Tokyo High Court in the judicial system of Japan. It is based in Kasumigaseki, a district in Chiyoda Ward in Tokyo, Japan. The Intellectual Property (IP) High Court was established on 1 April 2005, in order to accelerate and reduce the costs of patent litigation in Japan. The IP High Court hears appeals from district courts in Japan on patent actions and suits against appeal/trial decisions made by the Japan Patent Office (JPO).The IP High Court is also the exclusive court of appeals on issues such as: the rights of authors of a computer program, utility model rights, and integrated circuit layout design protection.

Kasumigaseki (霞が関, 霞ヶ関 or 霞ケ関) is a district in Chiyoda Ward in Tokyo, Japan. It is the location of most of Japan's cabinet ministry offices. The name is often used as a metonym for the Japanese government bureaucracy, while Nagatachō refers to the elected government or the legislative branch. Kasumigaseki Station was one of the stations affected during the Tokyo subway sarin attack.

Tokyo High Court (東京高等裁判所, Tōkyō Kōtō Saibansho) is a high court in Kasumigaseki, Chiyoda, Tokyo, Japan. The Intellectual Property High Court (知的財産高等裁判所, Chiteki-zaisan-kōtō-saiban-sho) is a special branch of Tokyo High Court. Japan has eight high courts: Tokyo, Osaka, Nagoya, Hiroshima, Fukuoka, Sendai, Sapporo, and Takamatsu. Each court has jurisdiction over one of eight territories in the country. Each has a president and several high court judges. Typically three judges will sit to hear a case, though in some cases - such as ones related to insurrection - five judges will sit.

Tokyo District Court (東京地方裁判所, Tōkyō Chihō Saibansho) is a district court located at 1-1-4 Kasumigaseki, Chiyoda, Tokyo, Japan.

Sakurada Gate (桜田門, sakurada-mon) is a gate at Tokyo Imperial Palace, in Tokyo, Japan. It was the location of the Sakuradamon Incident in 1860. Opposite the gate of Sakurada Gate is the headquarters of the Tokyo Metropolitan Police Department, which shares "Sakurada Gate" as a metonym (akin to London's Scotland Yard).

The Ministry of Land, Infrastructure, Transport and Tourism (国土交通省, Kokudo-kōtsū-shō), abbreviated MLIT, is a ministry of the Japanese government. It is responsible for one-third of all the laws and orders in Japan, and is the largest Japanese ministry in terms of employees, as well as the second-largest executive agency of the Japanese government after the Ministry of Defense. The ministry oversees four external agencies including the Japan Coast Guard and the Japan Tourism Agency.

The Japan Coast Guard (海上保安庁, Kaijō Hoan-chō) is the coast guard of Japan. The Japan Coast Guard consists of about 13,700 personnel and is responsible for the protection of the coastline of Japan under the oversight of the Ministry of Land, Infrastructure, Transport and Tourism. The Japan Coast Guard was founded in 1948 as the Maritime Safety Agency and received its current English name in 2000. The motto of the Japan Coast Guard is "Righteous Benevolence" (正義仁愛, Seigi Jin'ai).