Allen quickly jumped backward. In front of him, you can see instantly that the place got destroyed by the attack from his opponent. If you look at his opponent right now then you will find that he was fully injured because of those previous attacks that he received from Allen.
But not just him, Allen was also quite injured. Fighting a peak mortal-grade warrior wasn't easy. Even though he did not have the observation technique, he could tell his opponent most likely already reached level 45 to 50 or something like that. Because of this, it was quite hard for him to defeat his opponent that easily.
