Billionaire Legacy: I Became Overpowered With My Spending System

Focusing on his affinity, Logan started forcing out mana threads.

However, instead of immediately guiding them to the core, as was normal during cultivation, Logan let them float freely inside it.

After releasing a few threads, he started to feel a burning feeling within his core, followed by a sharp sting.

'I need more,' Logan thought, as the stinging got worse.

More and more threads started flowing out of his affinity, floating around within his core.

The stinging feeling he'd felt at the start was no longer there, replaced by a slowly increasing amount of pain.

'It burns,' Logan thought, clenching his teeth.

His body temperature was rapidly rising, sending alerts from his electric watch to Silas and Edric, who looked worried as the breakthrough continued.

Despite the pain, Logan kept forcing out thread after thread.

Minutes passed as his core gradually filled with countless mana threads.

Any sweat running down his face evaporated, even his skin turned into a light red color.