I cannot do that.

"Since I am doing you a favor, I expect you to do the same in return." 

Lyriana spoke and Nux finally understood what was all of this about,

"You need my help." He spoke.

"And you need mine," Lyriana replied.

She wanted to make sure that Nux knew the fact that he wasn't the only one with good cards with him, it was not a one-sided deal, and both parties needed each other.

"Yes yes, I understand."

Nux chuckled, he liked how Lyriana was acting.

"So, how can I help you, Lady Lyriana?"

He questioned.

"It is about my daughter."

"Ariana?"

"That is correct." Lyriana nodded.

"I want you to teach her about this energy you use instead of Mana."

Nux raised his eyebrow and continued to observe Lyriana, however, seeing that she was staring right into his eyes without any intentions of backing out, he realized that she was serious.

In an instant, Nux shook his head,

"I cannot do that."