I'm the Crazy One in the Family

While aura naturally loved dwarves, mana naturally loved elves. These races were able to accumulate aura or mana in their bodies without effort.

In awe of them, humans developed two techniques to imitate their power: aura and mana cultivation methods. Humans forcibly absorbed aura and mana into their bodies, sealed it in, suppressed it, and thus tried to mimic elves and dwarves.

Among these techniques, metamorphosis was one crafted for humans to surpass even elves and dwarves. Elves were attuned to mana but lacked aura, and dwarves were attuned to aura but could not wield mana. However, a human who underwent metamorphosis became a body optimized for both aura and mana.

Metamorphosis was rare three hundred years ago as well, though not completely unheard of. Some bloodlines were known to frequently undergo metamorphosis upon reaching adulthood.

However, at some point, every human of that bloodline vanished. It wasn’t just the bloodlines that disappeared. All research and records analyzing the conditions of metamorphosis—the secret techniques to induce it artificially—vanished without a trace. Because this happened during the height of anti-elf sentiment, blame naturally fell on the elves, saying it was the envy of humans that led to such sabotage.

Regardless, in the present day, only one in a hundred thousand people naturally underwent metamorphosis. It had nothing to do with one’s level or cultivation.

Of course, Keter knew the secret behind metamorphosis.

NovelFire

I didn’t expect this to happen now.

Metamorphosis only occurred in those who possessed both aura and mana. But having both doesn’t guarantee it will happen. The required condition was both simple and strict: one had to maintain their body at the brink of collapse that was caused by the overwhelming amount of aura and mana. Then, eventually, the body would reach a threshold and reconstruct itself through metamorphosis.

Aura was already covered, thanks to the self-destructive training. Did the recent surgery fulfill the mana condition? But even then, it’s rare for metamorphosis to occur immediately afterward.

The self-destructive training method, which destroyed one’s own body with aura, wasn’t designed for metamorphosis, but in theory, it could trigger it. Plus, it was true that Keter had been exposed to three hundred years' worth of pure mana through the recent surgery to treat Extreme Mana Overload Syndrome. However, as the exposure was extremely brief, the condition had been satisfied for only a moment.

Keter opened his left eye and looked to the side. There was Katherine, calmly managing her mana using the cultivation method Keter had taught her.