Teacher Sorata Muon carries on his family's centuries-old old tradition of being the master thief Mouse who can steal anything after properly alerting authorities of his intentions so they can be there yet fail to stop him. He is assisted by 3 nubile female assistants who also use the teaching cover and who, in typical Satoru Akahori, favor tight/skimpy/bondage outfits over their ample curves as they constantly pursue Sorata much more than he pursues them, although the girls do get some attention from their master. Not only is Mouse pursued by the girls & the local law enforcement authorities, there is also a secret art protection society employing the services of a former ally of Sorata's after his pretty little hide, all in 15 minute episodes.

The story is about a boy named Mangchi. He is small, but he possesses a magical hammer that helps him get around all his problems. Mangchi lives on a small distant island called Candlestick because everywhere else has turned into a wasteland because of some big catastrophe. When Princess Poplar from the kingdom of Jemius is being pursued by henchmen of the conspirator Moonk, Hammerboy sides with her, ready to unleash all his latent powers in order to save humankind. The movie premiered at the Big Apple Anime Fest on August 30 2003, and went into wide release in South Korea on August 6, 2004.

The world as we know it is actually just half the story, as Takeshi Nanase finds out abruptly one summer morning. On his way to kendo practice, Takeshi comes across an unconscious girl in a uniform he doesn't recognize. Takeshi does the decent thing and saves her, and in return the girl wakes up and accidentally turns him into a magic-user. As Takeshi finds out, there is the world he lives in and the world of magic users. Most magic users just want to peacefully coexist with non-magicians, but there are some with bigger ambitions. Mui Aiba is a magician enrolled in the Subaru Magic Academy, where magic users can learn to control and channel their powers and how to live in peace with regular humans. After his fateful encounter with Mui, Takeshi and his newly magician friends Kurumi Isoshima and Kazumi Ida decide to enroll in the Magic Academy as well. All three friends have different reasons for fighting on, whether they're fighting to escape the past or catch up to the future. They wield different kinds of powers, which they must learn to harness in order to fight off the Ghost Trailers, a group of magicians who are willing to use violence to assert their superiority over humans. Pursued by the Ghost Trailers, Takeshi and his friends must train to become stronger, face the leader of the Trailers, and prevent the beginning of the Second Great Magic War.

The story centers around a timid orphan named Mizumura Shinta who goes to a missionary school in Tokyo. His seemingly normal life changes when a beautiful half-human Romanian girl named Lilith suddenly transfers into his school. Mizumura discovers that he is actually a vampire hunter and the successor of the Romuald lineage.