This special task from the Empress truly was special. Normally, Gravis wouldn't be interested in fighting such weak beasts at all. Every fight was a precious tempering opportunity, and if he increased his Realm by eating weaker beasts, he was basically throwing away the advantages he had built for years.
Yet, Gravis didn't have to consume the beasts. Everything was up to him. Usually, Gravis wasn't the biggest fan of wasting food, but if there were no other way, he could do it either way. When it concerned his path to power, he was morally flexible.
Gravis also remembered something else. What had been his goal in making his incredible foundation and Battle-Strength? What was the driving factor for creating such a powerful Battle-Strength in the first place?
It was to make it easier for him to find resources relevant to his current cultivation level.