is a twenty episode collection of OVA

Original video animation

, abbreviated as media , are animated films and series made specially for release in home-video formats. The term originated in relation to Japanese animation...

s produced by AIC

AIC (company)

, often abbreviated as AIC, is a Japanese anime studio with headquarters in Nerima, Tokyo.The company was founded on July 15, 1982. In addition to producing anime for domestic consumption in Japan, AIC has provided animation assistance on other animated series such as Inspector Gadget...

, initially released in Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

 in 1992. The first two OVA series were later licensed and distributed in North America by Pioneer LDC

Geneon

is a Japanese music, anime and home entertainment production and distribution enterprise headquartered in Akasaka, Minato, Tokyo, Japan. Geneon has been involved in the production and distribution of several anime in Japan...

, with FUNimation Entertainment

FUNimation Entertainment

Funimation is an American entertainment company. Originally founded in 1994 by Gen Fukunaga, the company became a subsidiary of Navarre Corporation on May 11, 2005...

 taking over the rights for the third (and latest) series.

The distribution of the first OVA series was originally started in September 1992 and released six episodes that lasted until 1993. The first series was so successful that a seventh special episode was released in January 1994, followed by a second OVA series with six additional episodes that begun distribution in September 1994 and lasted for one year until September 1995.