Zatch Bell!, Volume 23 — Makoto Raiku

For his 14th birthday, Kiyo received a strange little boy named Zatch Bell as a bizarre gift from his father. Kiyo soon discovers that there's more to Zatch than his dad ever realized--Zatch is a mamodo child with magic powers that are unleashed by reading spells from a mysterious red book...and there are 99 other kids like Zatch who must fight one another to become the king of the mamodo world!

Awaken The Power Inside!The mighty Faudo, a mamodo bigger than a mountain, has come to life...and he's on his way to destroy Japan! Inside the monster's innards, Zatch and his friends fight Riou, the evil mamodo who controls the behemoth. Can they stop him in time, or is Tokyo doomed? Who will be the master of monsters?