A Stranger

Once the flames settled down all that was left was the melted ground along with burned corpses of the demon beasts. I mildly took a look at them and found that this time their cores had been destroyed well.

Honestly, this was one successful attack—it did far more damage than I expected it to. Or well, I would like to believe that was the case. 

The attack did more damage than I expected, that much was true. However, it was by no means a "successful attack". After all, just like the demon beasts I'd taken quite a beating as well. 

I had burn marks all over my body, my fingers had turned completely black. I couldn't feel my left leg even though it was there, and most of my clothing was gone too. If I hadn't used the Resistance spell then I would be in the same condition as these beasts.