The sound of dry leaves getting crunched wasn't coming from the vicinity. Instead, it sounded from very far away.
Delilah seemed like she hadn't heard it. It's not like she could. Her senses weren't as sharp as Roy's. She hadn't awakened using the awakening platform, and she didn't have a system that could boost her stats with a click. Her basic stats were pitiful compared to his.
Meanwhile, Roy was able to hear it as his hearing was as sharp as a grandmaster's. With every increase in a person's basic stats, their five senses would sharpen. For example, an aura master's eyes can see further and clearer than a weapon master's. They can do things that weapon masters can never hope to do. Their ears can catch a barely audible sound emerging from miles away, and their nose can pick up barely discernable scents in the vicinity.
The stats of aura masters averaged around 150-200 points, which was almost double that of an average weapon master.