Mirai Ninja

Mirai Ninja is a beat 'em up arcade game that was released by Namco in 1988 only in Japan. It runs on Namco System 2 hardware and is based on a Japanese movie of the same name, which was released earlier in the year.

Plot of the movie
A man's body and soul are stolen and used as part of a demon castle. What's left becomes Mirai Ninja. He teams up with the chi students whose cyber-earmuffs show matching red symbols. They fill their swords with ammunition, grab some neo-retro-cyber-antique guns and attack the demon robot expendable ninja squad. Each fight is won by whichever side uses more gratuitous special effects. They slay the Tron-like hover droids, who are destroyed in their shame. There's a showdown with a white-armoured guy with dreadlocks, who is later reincarnated by the eclipse and a lot of multi-coloured lightning. After killing the make-up-wearing effeminate spider person, the chi school fires a giant gun at the demon castle spider cyber robot. It blows up.