Time passed by quickly but also slowly after the battle on the shore of the Desolate Lands. Repairs to the Wall were made, and greater defensive fixtures were made. Leonidas threw in his entire support to the defensive measures, transporting a great amount of manpower and resources to the Desolate Lands to bolster up the defenses of the place against the invasion.
In just a few days, several magic cannons had been affixed to the top of the Wall. Each magic cannon was capable of unleashing terrifying spells of up to Peak B rank! However, the expenditure and the amount of resources that went into keeping up the output of the cannons was great.
It was there that Leon stepped in.
A magic cannon's source of power was a Mana Crystal. The purer the Mana Crystal, the greater the output of the magic cannon. Fortunately, Leon just so happened to possess a Mana Crystal mine that had a shocking amount of pure High Grade Mana Crystals.
