The results were much greater than his expectations, but he decided to think rationally about it. There's no way he was powerful enough to kill late-stage 3rd class beasts with a single hit.
The first explanation was that the lion already had some hidden injuries in its body that Damien had aggravated in their physical fight, the second was that the sunfire used the lion's own flames as a base and devoured its body, and the third explanation was that it was simply due to the amount of magic power he had put into the ability this time.
Each of these made sense in their own ways, so Damien assumed that it was most likely a combination of all three that led to the lion getting instantly incinerated.
'It was supposed to be a simple test of strength, but I ended up using most of my mana in the first fight.'
