[Kaiba is quick to turn around and harshly knock that hand off his shoulder, giving Bakura a very threatening look.]

I was only after an answer--which I got. I don't have any more use for you right now.

[He turns again to leave.

Kaiba didn't get stressed. OR at least, he channeled those feelings into sheer tenacity. There was no point in getting upset; right now he needed his anger to drive himself forward.]