Fubuki Sakuragasaki is a powerful gamer who, with the power of her Passion Panties, climbs up the ranks of the BAG (Best of Arcade Gamer) tournament to become the greatest Arcade Gamer in the world. However, the evil Gulasic Group is out to conquer the world through said tournament, and their gaming skills will prove to be a challenge. Fubuki must team up with the legendary Mr. Mystery to combat the four Gods of Gaming and make the world of arcade gaming safe for all.

The Blue World, which symbolizes reason, is under constant attack by the creatures called the Nightfly O'Note originating from the Red World, symbolizing instinct. Akira Asagi, the 17-year-old protagonist who is a researcher at Blue World, is nominated to lead the war at Ryuukyuu LAG, a proud defense facility on the islands of Ishigaki and Iriomote. She meets the sixth combat unit "IS," which was formed four years after a fierce battle that annihilated the fifth unit. Akari must lead these six riders, also called the Scared Rider Xechs, to fight against the other world while at the same time deepening the relationship among them.

A freak accident unleashes a demonic spirit within researcher John Stalker - transforming him into Saldo, a mythical cyber-beast fueled by hate and evil.

Child of Destruction is the sequel to the RIKI-OH OVA Wall of Hell. Child of Destruction tells us more of Riki's past, as we flash back to his childhood to learn the terrible fate of his mother and how he himself was taken away from his twin brother Nachi during a game of hide-and-seek, with Nachi's plaintive cry of "Are you ready yet?" haunting him through the years. Riki has a six-pointed star emblazoned on his hand, while Nachi has a swastika on his, the significance of which go unexplained. Riki finds himself in the town of Misaki, dotted with illegal nuclear power plants and run by a religious fanatic military organization called "God's Judgment." He is taken prisoner and made to fight in gladiatorial matches in a sprawling arena. He finds his brother, whose special powers have given him the name of "Savior," but his reunion with his resentful sibling turns sour rather quickly. Part 2 is much gorier than Part 1, with Riki smashing his fists into numerous soldier opponents with far less restraint.