She wouldn't have made it up, would she?

When Kellen finally made it to their side, he noticed that Gunther had a bruise forming on his face. Stunned, Kellen turned his gaze towards the S Class Captain of the Saturn Guild, but he was unrepentant. He smiled at Kellen, his eyes crinkling up at the corners as his yellow eyes stared down at him. 

"That was a rather exciting sparring session. What do you and your sister practise? I don't think I've seen that exact martial art before." Kellen shrugged at the Captain's question, but he was slightly suspicious. As far as he knew, the Captain hadn't really been watching. He'd had his back turned. 

"I have no idea. Mom taught it both to Gwen and I when we were young. Neither one of us had manifested yet, but we had a lot of energy and needed to get it out. From what she taught us, it's purely defensive and not meant to harm others, only escape." Hill seemed impressed.