Seikima II Special: Akuma no Gyakushuu is a 1986 video game launched in Japan for the Microsoft MSX2 platform. It's themed on Seikima-II, a popular Japanese heavy metal band established in 1982 by Damian Hamada, believed to be a group of demons spreading Satanism through their music. The band had various demon members, including leader Demon Kogure and crown prince Damian Hamada, each representing a particular hellish hierarchy. As per prophecy, post the global conquest, they disbanded on December 31, 1999.
Seikima II Akuma no Gyakushuu! is a video game that was released in Japan in 1986.
The game is based on a then-popular Japanese heavy metal band formed by Damian Hamada called Seikima-II. This band lasted from its creation in 1982 to its dissolution on December 31, 1999. Their history, as it has been prophesized, is that they are a group of demons preaching a religion in order to propagate Satan through the use of Heavy Metal. Each member is a demon of a different hierarchical class with His Excellency Demon Kogure being leader of demons and His Majesty Damian Hamada being crown prince of hell. In accordance to the prophecy and after completing the world conquest, the band would disband at the end of the century on December 12, 1999 at 23:59:59 Japan Standard Time (09:59:99 Eastern Standard Time).