Mana.

If one were to talk about this mysterious power, there would be no end to the conversation. However, if one were to define it in the simplest terms, then it could be called a 'unique gift'.

After the invaders devoured the Chief Deity, this power was the only method of resistance the humans had against the alien races.

Excluding one or two extreme cases, all humans generally possessed some amount of mana. An individual’s growth potential was dictated by one's inborn talents or bloodlines, but without a doubt, humans were born with this power existing inside them already.

Pretty much everyone who used this power 'professionally' would say the same thing: it'd be for the best if one started training their mana as early in their lives as possible.

This advice wasn't simply meant to imply the fact that one's available amount of mana would increase from the training. One would also get to train the pathways in their bodies where the mana flowed, the so-called 'Circuit'.

Someone born with a great deal of this energy needed to pay close attention when they started their training. There had been several cases where the fragile Circuits couldn't endure the circulation of the mana and tore up. In some cases, their Circuits were destroyed completely.

Just as one would temper the steel repeatedly to remove impurities as much as possible, the 'Circuit' would also strengthen gradually as a manageable amount of mana constantly flowed through the pathway. Thus, training oneself from early on was indeed the right call to make.

However, the situation Seol faced was quite complicated.

His powers manifested when he was extremely young. A small pathway gradually formed when he followed his instinct and used his new-found power. Never did he once receive proper training; he didn't even consciously realize that he'd been abusing his power repeatedly.

And the moment he lost his power proved to be a critical point in his life.

Although he'd been using his mana almost subconsciously, he had been relying on it for almost 20 years. Inevitably,...