The scales of the Black Dragon are naturally incredibly hard, but Mugeng's Demon Sword is not a common weapon either. It pierced a relatively soft part of the Dragon Race, so Mugeng gripped the Demon Sword and slid ahead, forcibly carving a long gash from Nefarian's jaw to his neck. She then flipped away to dodge the Black Dragon's furious counterattack.
Honestly, the few girls who came out with Duanmu Huai this time aren't very strong in combat. Ogis is undoubtedly the strongest, but she did not directly kill Nefarian; instead, she controlled threads to firmly bind this Black Dragon to the ground, creating an opportunity for others to attack.
After all — the girls came out to gather more combat experience.
