Konjiki no Gash!!  

Zatch Bell!, Konjiki no Gash Bell!!, 金色のガッシュ!!

In the morning, a gifted middle schooler named Kiyomaro Takamine receives a mysterious red book from a boy named Gash Bell. As instructed by his father, Kiyomaro must decode the book's contents. However, he soon discovers that Gash is not an ordinary child; instead, he can shoot lightning from his mouth when he says a specific word. This revelation unveils that Gash is a demon offspring - part of a centuries-old conflict between Demon Kings. Since Kiyomaro is the only person capable of comprehending Gash's book, he becomes Gash's partner in this captivating tale about companionship, perseverance, and an affinity for 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 Raikus suing of Shogakukan for losing some of his original artwork.