Zatch Bell!, known in Japan as Konjiki no Gash!! , is a Japanese manga series written and illustrated by Makoto Raiku. It was serialized in Shogakukan's shōnen manga magazine Weekly Shōnen Sunday between January 2001 and December 2007, with its chapters collected in thirty-three tankōbon volumes. The series follows the title character Zatch Bell, a mystical being called a Mamodo, who is partnered with a 14-year-old schoolboy Kiyo Takamine for a once-a-millennium tournament on Earth that determines the right to rule the Mamodo world as king. During their adventure, Zatch and Kiyo encounter and battle various Mamodo and their human partners, and meet allies who aid Zatch in his quest to become a kind king.