Bab 350: Unknown (9)

"It was something so simple… she is concentrating most of her energy on her lower body," Billy thought, and then he ended up getting kicked on his right side.

Natalie found something weird when she attacked because Billy's left arm blocked her kick and didn't move much, and unlike him, she quickly noticed that Billy's mana of Fierce Aura was there. Natalie knew that he would learn the trick sooner or later, but she didn't think it would be so fast… She got annoyed since it took weeks for her to think of that. Not to mention, implementing it was also something that she had to train for a while in order not to disrupt the whole skill... it was really troublesome and amazing that Billy could do that much so easily.