[A piece of the puzzle clicks into place. Somehow, Atem was here, and he got out. There is no way for Kaiba to know his "dirty secrets," Atem never admitted any of it alive. Not to anyone. He pulls the parchment from his belt and lays it out for Kaiba to see. What Kaiba said earlier about it being "again..." The logistics don't matter. He doesn't remember any of it, and lack of his memory makes for a poor argument against the words of the other person in his head and to himself. Atem finally laughs, but not from a joke— it's too dark and cold. It's his laugh before a Shadow Game.

Unceremoniously, he drops a gold bracer from his wrist onto the table, without a care for the thud it makes.]

I don't get it, Kaiba. None of this makes any sense. [He grabs a knife and thinks of Ushio. Fresher on his mind, that sin, his first Shadow Game.] Whoever that was before me... [The blade was of the same weight back then, too.] If he left this place, then he was a better man.

Let's play a game, Kaiba, and we'll skip the formality of a Shadow Game. [Are they not playing one anyway?] Because it's time for punishment.

[Atem digs the knife into his skin.]