One Slash Annihilation

After seeing the effect of the fire beam at SSS-Level mastery, Karsha became happy, ready to comprehend it and start using it. Although the SS Level is incredibly powerful. compared to what he has just witnessed from the SSS-Level, the difference is heaven and earth. 

"Let's do this, partner," he said, a determined glint in his eyes.

The clone raised its sword and slashed it down, sending out a 50-meter-long arc of pure flames. The ground shook, trees were incinerated, and jagged rocks were reduced to molten rubble. The sheer power was breathtaking, but Karsha knew he needed to understand every aspect of this skill.

For days, the clone relentlessly practiced the Fire Beam skill at its SSS level mastery. Each slash produced the same devastating effect: arcs of crimson flames that tore through the landscape, leaving destruction in their wake. Karsha observed closely, focusing on the minutiae of each attack, trying to grasp the full extent of the skill's power.