Zatch Bell! - Vol. 13

Blurb:
Newly arrived in the jungles of South America, Kiyo, Zatch and their friends dive into battle with Milordo-Z's cabal of revived 1,000-year-old mamodo. Though these ancient warriors boast frightening powers and spells, Zatch and Kanchom - are reluctant to do harm to the mamodo and their brainwashed book owners. After all, it's the fiendish Milordo-Z's fault that they're even here in the first place. Can Zatch be victorious if he keeps holding back? And what's this? Will Ponygon finally find a partner?