There used to be a superhero in this world. His name was Rei-Yon (Teruki), who wore the power suit "Rei-Yon", and smashed up the enemies. But people started to criticize him due to his huge power. He was run after by the police and media. And he finally disappeared... Eight years later, law and order has deteriorated and the number of serious crimes has increased. And there appears a new hero "Rei-Nana (Reina)". Teruki trains and controls "Rei-Nana" and fights against the new enemies.
