Capítulo 861: The Realms Above Arch Demon

After hearing the realm spirit's confirmation, Leon continued to watch Aria and Darlene through the realm spirit's omniscience.

A few moments later, he furrowed his brows and wondered, 'Why are they still collecting the monster cores despite having no use for it?'

'There's actually a use for the monster cores, Master,' Tak-si stated.

'Despite the artificial spirit energy possessing extreme side effects after prolonged exposure to it, all the demons that ever came to this sub-realm had always collected the monster cores for cultivation without exception.'

'However, it's not just demons; many people are willing to ignore the defects for the power they can obtain from the monster cores. Thus, the monster cores can be used as a form of currency, Master,' Tak-si explained.

'I see…' Leon rubbed his chin thoughtfully.