Synopsis: Zatch Bell!

One fateful morning, Kiyomaro Takamine, a brilliant middle school student, is greeted by a peculiar boy named Gash Bell, who possesses a mysterious red tome. After being instructed by his father to decipher its contents, Kiyomaro soon discovers that Gash is not an ordinary child. Capable of unleashing bolts of lightning from his mouth by uttering certain words, Gash is actually a demon child and part of an ongoing millennial conflict to determine the Demon King. With Kiyomaro being the only one capable of reading Gash's enigmatic book, he is unexpectedly roped into becoming his partner in this thrilling tale of camaraderie, perseverance, and even melons...?