The platform is a stone viewing area built into the fortress walls, large enough to host a command group - or a hundred students crowding around the railings - and enchanted to suit.
Once they're all present, the Fortress-Commander will reappear, this time standing nonchalantly on the air a few meters past the railing, as though there were an invisible podium in place much like the one from the auditorium.
"Now that we're all here, I'm proud to introduce you to our 5th realm core disciples - walking the Way of Inquisition - Orichalch Demon-Harrier! And his opponent, walking the Way of Combat Engineering - Darkened Defilade, Saviour of the Nine Cities.
Both of them move onto the field by visibly moving through space, albeit at superhuman speeds. Orichalch looks much as he did yesterday - golden robes with elaborate embroidery and all, standing tall and cheerful, a golden chain hanging from either hand, this time tipped with daggers of the same golden material as the spirit-chains themselves. Defilade, on the other hand, is a slight and exhausted-looking woman, her skin pale and sickly and bags under her eyes visible even from this distance, her form more bowed by exhaustion than by the weight of her immense pack and heavy armour, a mundane-looking (and somewhat rusty) trenching axe in one hand.
"Now, this is just an exhibition match, so don't expect them to go all-out - It wouldn't do for anyone to get hurt. The fight will be until either side yields or is unable to continue, though I trust that they will exercise good judgement in these matters."
He allows a pause, to make sure everyone is in their proper positions.
"The fight will begin on my mark. Three, two, one. Go!"
Both fighters remain still for moments, watching each other from across the field, and as they do so, they unleash their auras. Orichalch's aura of inevitable pursuit is somewhat more bearable for being aimed at a third party, but Defilade's own aura - a sensation of invincibility, of dread omens, of the claim - no, the fact - that every step forward will be paid for with an ocean of blood - added into the mix sends a ripple of shock through the crowd. Those from ducal or comital families maintain their composure, as does the mechanical spider, but the rest of the class are universally staggering and grimacing. The combatants seem to allow this to linger long enough for people to recover and return to observing, before Defilade makes her move.
She plunges her axe into the ground, and where a mortal would have only a single clod of dirt, her axe brings up an entire hill fort. Faster than humanly possible, she pulls from her bag supplies and starts spinning out further fortifications - as moments pass, the hill-fort becomes a star-fort and then, when further space on her half of the field is not available, she spins out more space, a muddy no man's land filled with conjured reels of barbed wire hanging in the air. But Orichalch doesn't give her time to deepen further - the moment she starts construction, he rushes forwards at a speed so fast an ordinary human struggles to follow his motion, conjuring further chains to parry the bullets and cannon-shots that start to fly in his direction, to pull him forward and to use their golden blades to slice a path through her defences. At first, every path he carves seems to reveal only further fortifications, kill-zones and explosive traps where passage ought to be found, and he flits from edge to edge, leaving chains to fight and pry into existing weaknesses while shrapnel and walls seek to hem him in. He'd be lost in a maze of mud and death if not for their high viewpoint making both him and her more obvious, as she commands her forces from the rear, still assembling further weapons with which to strike him. Moments pass, and he pauses, taking hits from cannons and bullets that often don't so much as pierce his robes to gather his chains into a ball of radiant light that cuts straight through the stone of her fortifications. It misses her entirely, of course, since she was not foolish enough to remain at the exact centre of her fortifications, but he dives into the gap himself, and the fight becomes one of him dodging through stone walls that seek to crush him or divert his flight. He's ultimately too fast for them, and dives into the room where Defilade's last-ditch attempt to chain him in barbed wire falls to his own chain-blades and he can tackle her off her feet and chain her to the ground. She yields.
The entire fight is over in less than a minute.
The Commander allows them a moment to collect their thoughts. "Now, perhaps a small test - why did Orichalch win? I will award a small prize to the person with the most interesting insight."