It's hard to become strong

After sitting cross-legged, he tapped on the 'enhancement' and agreed to enhance 800 units of his Mana.

Weng!

Immediately after he clicked on it, a strange energy appeared out of nowhere, entered his Mana core, and started merging into his Mana.

"Argh…!"

Although he already knew that there would be a lot of pain when the enhancement process started and had prepared himself to endure it, he still found it hard to bear and cried out in pain.

Fortunately, most of the buildings in this world had soundproofing formations established, or everyone in the city lord's mansion might have been alerted by his shrill screams.

After around six minutes, the enhancement of 800 units was done, and the pain slowly lessened. However, unlike last time, it didn't vanish in its entirety. He was still feeling a searing pain in his core which was caused by the pressure exuded by 2300 units of three-star Mana.

Huff… Huff… Huff…