Five Elements

Nevertheless, before Vaan could even cultivate the Everlasting Blood Mantra, he had already realized the first problem – How could he refine blood essence into origin blood if he couldn't even manipulate the blood?

The Everlasting Blood Mantra explained the 'how' of refining blood essence into origin blood but not the 'what' of refining.

'Is comprehending the Blood Law an unstated prerequisite to cultivating the Everlasting Blood Mantra?' Vaan frowned in wonder.

However, he felt like there was a problem with this line of thought.

After all, it was like saying that in order to learn how to become a blood immortal, one had to be a blood immortal already.

'Maybe the Everlasting Blood Mantra is only suitable for a certain Blood Race?' Vaan guessed.

However, he quickly scratched the idea.

After all, Hecate had already told him she had given up because it was a broken technique for her.