His shoulder.

Did something happen with it? He'd seen Kaiba rub it a few times since he's known him, usually idly as he walks from place to place.

Same spot.

Same shoulder.

But the stranger thing was the way emotions flitted across his face, leading to a... conclusion that didn't seem right.

Kaiba? Not notice something?

Fastidious Kaiba? Persnickety Kaiba?

Weird. This was weird.

"Really? Is it normal for them to miss something like that?"

One moment, he looked as though the floor was about to cave in under him, and now he was calm, like a switch got flipped.

Something was going on.

But what?