"So you keep saying," Emphasizing the point that it doesn't need to be repeated. Kaiba actually does have his suspicions but he's not really in a sharing mood. Considering the timing of his being brought here and the circumstances it's a fairly compelling explanation in his mind.

Despite having been mildly interested in the games assembled, he hadn't engaged in a single one of them aside from darts. Somewhat ironically considering his prime suspect.

"I think we're done here..." It surprisingly had rewarded him with something he hadn't heard before, but he was no less closer to his aims.