In a small cottage that was temporarily erected, a boy was sleeping with a serene expression on his face, as if he had no worries in the world. It was hard to look at the peaceful and angelic face and relate it to the cause of the calamity in the outside world.
The spell Grand Elemental Annihilation is a tactical spell that requires almost 50 rank 4 mages to cast. Havien was able to cast it alone due to a few reasons.
First, despite the requirement of 50 mages, Havien had 9 S+ rank cores within him, so due to the high rank and eliminating the factor of foreign mana from multiple people, Havien was able to cast the spell.
Second, Havien's sensitivity towards mana and his high-capacity brain allowed him to take on multiple people's roles alone. In other words, Havien's natural talent also helped.
