Hayate the Combat Butler (Hayate no Gotoku!)
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Hayate Ayasaki is an unlucky teenager who worked since childhood to make ends meet due to his parents' irresponsible behavior. One day he finds out that his parents ran away from home, leaving behind a massive gambling debt on his shoulders. While running away from the debt collectors, he ends up meeting Nagi Sanzen'in, a young girl who is the sole heir of the wealthy Sanzen'in estate, and due to a misunderstanding, Nagi ends up falling in love with Hayate. After he rescues Nagi from some kidnappers, she hires Hayate as her new butler. Aside from performing his ordinary duties as a butler, Hayate must fight to protect Nagi from harm, a difficult task as her life is always in danger because she is the target of other individuals coveting her family's fortune, and sometimes deal with some extravagant requests from her, oblivious to Nagi's true feelings for him. The Hayate the Combat Butler anime first aired on TV Tokyo in Japan on April 1, 2007, produced by animation studio SynergySP and with music by K.tar. Nakagawa. The series is also slated to air on the CS television network Animax starting on October 25, 2007, where it will receive its satellite television premiere, and will be shown uncensored.

An original video animation episode was released on March 6, 2009 in DVD and Blu-ray formats. A second anime season of Hayate the Combat Butler titled, "Hayate no Gotoku!!" (an additional exclamation mark) began on April 4, 2009, produced by animation studio J.C.Staff.