Medabots—powerful robots granted artificial intelligence through special medals—serve at the whims of their owner. They are more commonly used in Robbatling, a popular combat sport where two medabots face off against one another. In its professional form, Medafighters use their Medabots to qualify for the World Tournament and fight amongst the elite to gain the title of champion. Elementary schooler Ikki Tenryou has just gained his first Medabot: Metabee, an outdated model with no medal. Fortunately, however, Ikki manages to find a medal in the nearby river; but when Ikki places it into Metabee's head, the latter starts to exhibit strange behaviour. Short-tempered and rebellious, he refuses to obey Ikki's orders. However, to climb the ranks to the World Tournament, Ikki and Metabee must first learn to work together, no matter how difficult the prospect may seem…

In a dystopian future, two friends dream of freedom... and gain more than they bargain for! Hothead Zed is on the run from the authorities, while his brainy pal Noah struggles with his own battered body. Both find a magical world that seems to offer escape and power undreamed of. Join Zed and his powerful, rebellious spirit Amir Gaul on their search for the ultimate power. It's a force that can save the world—or destroy life as we know it. This is the world of KIBA! Where you must harness the power within and fight with all you got! (Source: RightStuf)

During the events of the original Rozen Maiden, after circling yes on a paper and agreeing to wind an unknown something, a traumatized Jun Sakurada fights alongside the lifelike dolls known as the Rozen Maidens. But what would have happened if Jun had circled no? Jun, having gotten over his school trauma from his younger days, spends his time attending college and working in a bookstore. However, he does not feel as though he belongs anywhere. One day, he finds a book containing instructions on how to make a Rozen Maiden. Mysteriously, when he arrives home that night, the second volume in the book series has been delivered to his house, along with some pieces of a doll. But as suddenly as they started arriving, the books stop coming, and Jun gets a notice that says that the books have ceased being published. With an incomplete doll in hand, and a message from his other self in another world, this Jun also finds his way into the world of the Rozen Maidens.

In a futuristic era, The World is a peace-bringing entity. Though no one knows its location, it has watched over Earth for so long that war has become merely a fable. The airship Norn's task is to deliver nine ability users to The World. After collecting the last person, Norn takes off. Included onboard are eight men and three women—Koharu, who has finally escaped her loneliness and detests her destructive power; Mikoto Kuga, born to a noble family, who uses her barrier skill to protect the Norn and those it carries; and Nanami Shiranui, whose ability only brings pain, and who wishes to die for a past sin she has committed. While en route, suspicions arise amongst the passengers when they realize there are too many people onboard. As they try to determine who has snuck aboard, the ship is attacked by an unknown assailant aiming to stop the Norn's progress at all costs. From this chaos arises questions: why were they granted powers, and what must they do once they reach The World?