Upon seeing this, Sterl's pupils contracted slightly.
This ability was incredibly similar to the Perfect Regeneration of his Star-Bone Sacred Body. However, from the aura, it seemed that the creature's strength hadn't increased—it had merely strengthened its physical defense.
Even so, this was already an incredibly troublesome opponent.
After all, this was an Annihilation Realm King's Fist, gathered to its extreme in Sterl's normal state.
The power of this punch, while it might not threaten a being at the level of a powerful Divine Power, should be enough to send any upper-level divine authority flying with a single hit.
Yet this punch was easily blocked by the creature.
The most crucial thing was that Sterl couldn't figure out whether this ability was something the mysterious invaders already possessed or something developed from his own Perfect Regeneration.