Five boys must guard the border-wall on Earth that separates humans from the mega-beasts. Battles won by the border guards earn them upgrades in their battle gear. Battles won by the mega-beasts give them more power. In this book, Kai faces the beast from the rock world.
Loading...
Details
ISBN: 9781443107488 (pbk.)
ISBN: 1443107484 (pbk.)
Physical Description:76 p. : ill. ; 20 cm. --print