Evan looked at the blood mist and the collapsed sky with a deep look on his face before shifting his attention to Groola's body parts, which were falling from the sky.
Normally, even with his current stat points, it would have been impossible for him to kill Groola, who was at the peak of Rank Five with just a single blow.
The body of a Rank Five Core Evolver is nourished by the power of laws, making it extremely difficult to kill them due to their tenacious vitality. Even if their hearts and brains are destroyed, they wouldn't die easily, and with sufficient energy, they could recover without much issue.
The reason Groola died after just one blow was due to the Critical Hit effect of the Master of Shadows Authority.
