Kaiba's eyes narrow, and for the moment, he ignores Yuugi. His brother's the only one in the room for him now.

"If you have something to say, then don't hold back," he says coldly, but there's no bite to his expression at all. He's doing this on purpose.

He's letting his brother have a chance to vent, because Seto had put him through an ordeal that he should never have, and Mokuba deserved to be able to unleash his frustrations to where they belonged.