The Type 90 is a Japanese main battle tank that was developed for the Japan Self-Defense Forces in the late 1980s. Development of the Type 90 began shortly after the adoption of the Type 74. The new tank was designed to effectively counter the Soviet T-72 tank. Several prototypes were built and tested between 1980 and 1986. Later models were equipped with a Japanese 120-mm smoothbore gun instead of the German Rheinmetall L/44 to reduce production costs. The Type 90 is also equipped with an automatic loader. Following tests in the late 1980s, the tank was adopted into service in 1990. A Type 90 (B) variant featuring mounts for the Type 92 minefield-clearing roller was introduced later. Between 1990 and 2009, 341 tanks were produced, and all remain in service with the JSDF.

A special version of the Type 90 (B) was introduced as part of the Senrai Maidens event event in 2026. This tank differs from the other premium version due to its unique appearance, which is designed in the style of Usagi, a character who embodies courage, speed, and genuine passion. Otherwise, the tanks are identical. The Type 90 is a highly mobile MBT with excellent dynamics and very fast reload times thanks to its autoloader. However, its high mobility comes at the cost of relatively weak armor, which cannot reliably withstand most enemy shells. At the same time, blow-off panels increase the tank’s survivability when ammunition in the rear of the turret is hit. The controlled suspension enables the tank to traverse rough terrain and elevate the gun at greater angles. Unlike the base version, this variant cannot mount a dozer blade; however, it has additional 10-mm armor plates on the front of the hull.