Leonardo's body suddenly started convulsing, and with foam spilling from his mouth, even a fool could tell something had gone wrong.

Damage to the soul was entirely different from physical injuries. If one got a cut, even without treatment, their body would eventually heal on its own.

However, the soul wasn't like that. Any damage was permanent and had widespread consequences. Even if just a fraction of an inch of the soul was harmed, the physical reaction could be extreme.

Felix let out a long breath. "Finally got it out. It sounds easy, but doing it was incredibly difficult. Even with my soul energy, I nearly couldn't hold on."

The level of precision required to make such an impossibly fine cut was beyond imagination. To do it without causing any collateral damage would require soul energy beyond comprehension.

Of course, Leonardo's soul had been damaged. There was no avoiding it.

"At least he's alive. You've done all you could," Donna said.

However, Felix just smiled. "That'