After a fun day in the park, Zatch and Kiyo decide to finish their day by building a sand castle, but at that moment Penny returns with 3 Ancient Mamodo, Dogmos, Erujo, and Boru Bora, to defeat Zatch and Kiyo and burn Zatch's book once and for all! notes on this episode: Aired in Japan on May 2, 2004. Covers chapters 104-105 of the manga.
Chapter 104: The Rematch
Chapter 105: The Mamodo From A Thousand Years Ago Kiyo and Zatch learn of the millenium mamodo in this episode We learn that each Millenium Mamodo and their respective owners are manipulated by Milordo Z's power. Additionally, each human partner are descendants of the people that fought alongside these Mamodos one-thousand years before them. Goren of the Stone is featured in Penny's story using his spell to turn the featured Millennium Mamodos into Stone Tablets.