Vos watched with interest as Hikaru formed her shell, taking note of the way she channeled her energy. He himself planned on learning something similar, further expanding upon the principles of astral projection used in the Killer's Ring technique. The upcoming tournament had him busy with mastering the spells he already knew, making sure that no matter what, he could rely on them, and there was no time left afterwards to dabble into anything new; for the matter of fact, it was the exact same with his swordsmanship. This fight would be refreshing change of pace for Vos, and the perfect time to lay a foundation for future studies: if he didn't revisit the plans he had often enough, then they would eventually fade, becoming naught but a few scattered and vague ideas, needing to be pieced together again. Yes, it sure wouldn't hurt to share a word or two with her about magic - but that certainly could wait until their sparring session was finished.

Vos'stoorge observed Hikaru entered her battle stance, and in response, assumed one of his own. She had taken a well-guarded stance with very few offensive options, from which he inferred that his opponent wouldn't be taking the initiative, inviting him to strike first. However, the only thing left exposed was the katana itself, positioned in such a way that it could both block any incoming attack and threaten him at the same time. He could try to bat away the katana, but Vos felt like such a move wouldn't utilize his dual-wielding setup to its fullest, and opted for a different strategy. 

Left foot set forwards, with the dagger raised, and sword in his right hand, resting on the shoulder, he moved towards Hiraku, bringing his main-gauche in to block the point of her blade. Arm bent at the elbow, he would inch closer and closer, until his weapon touched the katana, pushing into its edge. It would be a decisive moment in his opening gambit, the outcome determined by whether Hikaru would immediately decide to disengage, or hesitate for a moment. Should the latter happen, Vos had a plan at ready: stretching out his arm, he would slide the dagger past her blade, putting his forearm inbetween it and his body, then hook it from behind, push it downwards and twist towards his opponent with the right shoulder, aiming a horizontal chop to her neck with the broadsword.

But if she pulled away - then, Vos would have to just react to the situation.