Volume 4

"Army of the Fracture Demons" is the fourth volume of Fantasy Math Series.

Summary
The Seal of Division was destroyed, and the Fracture Demons' army was released. To protect the math world, Zero and his allies travelled to the Kingdom of Jaina. However, they were attacked by Asura, and thus Zero fell into Hell which is full of Fracture Demons. At the same time, Asura realized an abnormality related to his own past.

Chapters

 * Chapter 1: The Seven Seals
 * Chapter 2: Confrontation with Asurra
 * Chapter 3: Monster Hunter Sword
 * Chapter 4: On a Trip to Hell
 * Chapter 5: Asura and Gil de Rays
 * Chapter 6: Army of the Fracture Demons