Wallis grunted. 'That thief.' She followed his lead, knowing fully that she was playing into his hands, but the key was to be controlling. And her emotions were already suppressed, although depersonalized beyond repair; she needn't worry about slipping any confidentials, at least.
She sprinted down the alleyway, right at Mercury's tail. His speed was a little faster than hers, just enough so she could keep up without him dissipating into thin air. As she ran, her eyes noticed something strange - the case was not in his possession - coming to an immediate halt. They were stationed in a secluded area with warehouses and tall buildings and steel leverages. The perfect place for murder, one could say. Not that it was going to be carried out. He was after something, and she had a feeling she knew what that 'something' was.
'So be it. Let's see who doesn't get involved first.' Wallis settled her thoughts, as confusing as they were. They were comforting, to say the least.
"You'll get it back after this." He smirked a little, pivoting on his left boot as he leapt towards Wallis, slamming the right leg at her.
The block of slate on her arm reassembled itself into a shield, taking the heavy blow head-on. He was repelled by the force, but immediately after the previous attack, would respond through a series of complex kicks and leg movements. Everything, from the underside, to the abdomen, to the pressure points of her neck and shoulders at angles near-impossible to reach, were fended off by a mere a piece of defensive steel. He kept pushing her, aiming for the hard-to-reach spots; she didn't feel threatened if it was necessarily for her to retreat, and in fact, analyzed his actions down to the nano-seconds. So careful with every little thing.
The climax of the battle arrived when he came onto the shield, using the force to pummel himself into the air and gain momentum. High above the ground, he swung his leg at her with huge impact, coming down directly onto the safe-guard. She held on, not giving in, until the level of power was too great to be confined, blasting the two on opposite ends of one another.
Wallis skidded to a halt, quiet as always, though her mind did wander a little bit. And when odd musings came about, she coughed uncomfortably, looking away.
Likewise, Mercury rounded his leg to gain balance, screeching to a stop. His perceptive eyes directed themselves at Wallis, and he caught something quite unnerving. She was, how would you say it - absolutely strange. Yes, drifting in-and-out, she was there physically, but other times, it felt like he was pointlessly chasing a shadow.
"Ah, I forfeit." He put his hands up, even if there wasn't a proctor present. If he couldn't figure out her semblance after that, which was a lot more coordinated than usual, pressuring her further was going to be a waste of time. Obviously, she didn't rely on it very much. Maybe she didn't have one? Well, either way, he left it alone. He'll have to use other methods outside of dissecting combat moves to figure it out.
She approached him while he was sorting his thoughts, getting so close that it made him uneasy. He got a better look at her. The same old expressionless child she was - not even a frown, or cheeky grin in response to the farce he pulled. Her face was dull, but certainly not the way she carried herself. A curious one. She held out her hand, asking him to return what was originally hers.
But Mercury wouldn't let this one go. She wasn't half-bad, actually. Arms rested behind his head, he spoke up, "I never did promise that I was going to return it," looking away innocently, "how about we go somewhere together." He didn't know if she knew what he was implying, but left it up to her for interpretation.
"...Give me the suitcase. A deal is a deal, whether we pinky-promised on it or not." Without meaning to, Wallis let slip one of her kiddie expressions, even though there was no mention of the locking of pinkies. She gave him one of aimless stares, hinting at the seriousness of the matter. Although after the little mess up, it was difficult for him to look at her the same way. She sure was funny in some places.
"I never specified after what," he leaned in closer before knocking his forehead gently against hers, stepping back, "hmph. That head of yours is pretty empty."
Startled, she rubbed the bruise and remained silent.
"Four o'clock, tomorrow, at the cafeteria." He finalized the plans before heading off.
'She's a weird one.' He sighed.