Su Yu looked at the black sphere in his hand, sensed it, and discovered that the power contained within it wasn't actually strong, only at the six-star level.
It was just incredibly fast and had powerful spiritual erosion capabilities.
This must be Brutality's trump card, used to escape at the last critical moment, not to be used until the very end.
No wonder Brutality had persisted fighting Su Yu for a month without considering using this method to exit the battle.
If Brutality left directly in black mist form, the mist's strength would be insufficient. If it encountered other powerful Transcendents, they might capture it, which would be troublesome.
However, capturing this black mist would require at least a seven-star strength, so it's not easy to encounter, and the chances are actually low.
Brutality kept fighting with Su Yu until now, probably because he got emotional.
