Who: (Older) Yuuki and Atem
What: Atem has decided it's time to get some questions out of the way
When: During Yuugi and Kaiba's duel
Where: SOMEPLACE
Warnings: None that I know of?
Yuugi had left for the duel. Atem knew it was going to happen and he knew he was excluded, but it didn't stop him from wanting to go there. It wouldn't have done anyone any favors, his being there. So he would have to wait. But waiting, pacing, and worrying would not do him any good. So he'd made sure to have something to do then.
It was time to find out some things about the younger Yuuki that had been bothering him for a while. It was also important for him to know these things, though he worried a little about invading her privacy. He'd have to try and find a tactful way to not do that.
So a few minutes after Yuugi had headed off (in order to avoid Kaiba thinking he was following him or something) he left as well.