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Takamine Kiyomaro, a depressed don’t-care-about-the-world guy, was suddenly given a little demon named Gash Bell to take care of. Little does he know that Gash is embroiled into an intense fight to see who is the ruler of the demon world. All of the demons have to pick a master on Earth and duke it out with other demons until one survives. Needless to say, Kiyomaro becomes Gash’s master, and through their many battles, Kiyomaro learns the importance of friendship and courage.

Meet Louise, a budding magician. The students at the Tristein Academy call her “Zero Louise”, due to her current record of zero successes with magic. In fact, her magic tends to go spectacularly wrong. Now, as an important test of her aptitude for magic, she must summon a familiar to be her servant. At this critical moment, she summons up all her magic and wishes for a familiar that is “devoted, beautiful and powerful”, and gets… Hiraga Saito, an ordinary Japanese boy. It’s difficult to say who is more surprised and dismayed, but the rules don’t allow for second attempts. Louise is stuck with her strange familiar, and he with her.

This sequel is a continuation of the previous season, not long after the war. Louise and Saito seemingly getting along now since she knows that he had given up his only chance to return to Tokyo for her. The story continues as Louise begins to use Void Magic from a mysterious secret book she had received from her majesty Henrietta, while a new villain has appeared in town causing trouble.

Following Saito’s heroic actions in the War with Albion in season two, Saito & Louise return to Tristain, only to have the runes which bind Saito & Louise disappear. Saito & Louise struggle with a relationship no longer defined as Master & Familiar, as they search for an Elf who has the power to restore the dead to life, and may hold the key to understanding Saito’s loss of the Gandalfr’s power.

The story follows the adventure of Van Flyheight as he helps his companion Fiona learn about her past. The two meet after he stumbles upon her and a mysterious human sized zoid, or robotic animal, he later nicknames Zeke in some abandoned ruins while being chased by bandits. Later on we learn more about Zeke’s purpose, Fiona’s past and the nature of the combat ready Zoids in general. As a side note, in the US Zoids: Chaotic Century and Zoids: Guardian Force were merged into one series under the Chaotic Century tag due to the fact that Z: GF was a direct sequel to Z: CC. Here they will be listed seperately in the same category.

Natural disasters have devastated planet Zi, killing off almost all life. A thousand years later humans have gradually re-established civilization, salvaging ancient Zoids through diving and mining efforts. In a village whose most previous item is a giant sword which they worship as a holy symbol. A teenage boy discovers an ancient Liger-type Zoid while on a deep water salvage operation. Suddenly the village is attacked by skeletal Bio-Zoids intent on stealing a powerful generator located in the village. Our teenage hero awakens the Liger and discovers that the town’s sacred sword is the Liger’s weapon, together they fight off the mysterious Bio-Zoids. At least for now…

New Century Zero takes place several centuries after Guardian Force, where Zoid battles have become a tournament-based league of sorts. The main character is Bit Cloud, a junk dealer, who runs into the Blitz Team. As Bit interferes in a match with the Blitz Team he comes across the Liger Zero, a Zoid possessed by the Blitz Team which no one can pilot. Bit and Liger form a partnership and end up joining the Blitz Team in their various league matches. He is aided by his teammates, Leena Tros, Brad Hunter, and Jamie Hemeros, as well as their leader, Dr. Steve Tros.

The Liger Zero is revealed to be a unique Zoid, an Ultimate X; it contains an “Integrated Organoid System”, or “black box” - a self-supporting artificial intelligence program that allows the Liger Zero to learn and adapt on its own. Only special “chosen ones” can pilot an Ultimate X.

Along the way, Bit’s unique Zoid gets the attention of the Backdraft Group, an organisation who is trying to make zoids battles more interesting and take over zoids battles. The Backdraft attempts to acquire the Liger Zero by any means possible. They eventually unearth the Berserk F

Michiru Kita is a special girl who possesses Shinigami Eyes, which allows her to see a dark ring around a person’s neck. This ring symbolizes the person’s impending death; once they are marked to die, a gray line, which is invisible to normal people, appears on their neck, and once the ring turns completely black, the person dies. Chika Akatsuki and Shito Tachibana, two boys in her class, both have black rings around their necks, but to her surprise, they are not yet dead. It is revealed that after a tragic accident that was supposed to kill them both, the two boys made a deal with a secret loan office called the Zombie-Loan. In return for keeping them alive, the two have to hunt zombies for the loan office. When Michiru gets involved with them, she finds that her life has just become more complicated.