[Really, his arm does not at all look like it should be putting out the force it is at the moment. Without a shirtsleeve it's downright skinny, no evident muscle to be found, but here they are evening each other out and finding some mutual surprise for it.

Possibly moreso for Shizuo, neutral expression starting to slip into something a lot more startled as Ramir proceeds to...not fly off the bench. And even force his arm back upright. Ah, this is...there's no give. There's almost no give? He's punched through stone walls with more give than this. He pushes back harder, with proper effort this time, and it's actually outright difficult.

Surprise slips into a grin of his own, automatic, half disbelieving and half increasingly pleased.]

Ah, speak for yourself-- [Warming up to the competition now, he attempts another hearty push to bend her arm at least a little past midway. Did the bench just creak a little? Is stone even supposed to creak like that? Ah, who cares...] You're not holding back on me here or anything though, are you? I'd almost think this is your first time arm-wrestling too--