Volume 7

"Army of the Equation Insects" is the seventh volume of Fantasy Math Series.

Summary
What happpened to Kathy? Why did she slay the three kings and destroyed the third seal that sealed the Equation Insects? Kathy's secret past will be revealed... The Orcs army assaulted and destroyed the Jaina Kingdom, the Equation Insects army desired to eliminate the X Knight. Can Zero and his friends protect Atlantis?

Chapters

 * Chapter 1: Solving Magic Square Puzzle
 * Chapter 2: The Third Seal Destroyed
 * Chapter 3: Kathy Pressured
 * Chapter 4: Leena... The Magician of Geometry
 * Chapter 5: Friendship on Cliff's Edge
 * Chapter 6: Bel-Zebub, Leader of Equation Insects Army