Kiyomaro Takamine, genius middle schooler, is greeted one morning by Gash Bell, a boy with a mysterious red book. Tasked by his father to decipher it, Kiyomaro soon learns Gash is no ordinary boy. Able to shoot lightning from his mouth at the chant of a word, Gash is a demon child—one a part of a war that takes place every 1000 years to decide the Demon King. With Kiyomaro being the only one who can read Gash's book, the duty of partner is thrust on him in this exciting tale of friendship, determination, and melons...?

Konjiki no Gash!! was published in English as Zatch Bell! by VIZ Media and 25 volumes were released from August 9, 2005 to June 9, 2009. Publication was discontinued following the aftermath of Makoto Raiku's suing of Shogakukan for losing some of his original artwork.