Mystic Giant Wasp
Aura, unlike mana, does not exist outside the body but is an innate ability that every living creature has, some more than others. However, with training, it can increase.
It possesses reinforcement properties, turning a regular human into a superhuman. Most, if not all, warriors use aura, with the special ones employing both aura and mana.
"Hahaha, yeah, sing my name," Richard thought, a smirk plastered on his face as he had proved them wrong.
" All that training paid off, I can now ... " He stopped mid-sentence as he and the rest of the troops heard a loud crashing sound that seemed to come from the wasp hive.
It sounded like something breaking.
" Is it coming out? " one of the soldiers thought allowed, creating panic in the brass warriors who were not done with their jobs.
Unlike the iron warriors present, they lacked combat training—complete novices who might die when attacked even by a horned rabbit. They were non-combatants.