Of course, one might immediately ask: with Leon's talent, why doesn't he just grind for months for monster essences and grow strong enough to defeat everything effortlessly.
And the reason to that was very simple: he planned to eventually, but he needed time and the right opportunities to do so.
He actually wanted to stay in the [Requiem Stronghold] to have access to the most dangerous areas and monsters just for this specific reason: to get stronger as efficiently as possible through constant grinding.
After all, as long as he consumed enough monster essences, literally nothing could stop him from growing infinitely stronger over time.
But then the matter with the requiem guild appeared, and now he was here in the catacombs, though his plans hadn't changed one bit, he simply had a deadline now.
