Kaiba frowns at the use of that word. Partner...? They're not...partners. But something about seeing Yuugi's face light up quells Kaiba's urge to tear him down.

It feels like home, somehow. It makes his soul yearn for his life back, to be back in Japan and struggling with what he knew, rather than what he did not. And Yuugi will be able to see that in his eyes as they half-lid, very nearly shutting completely in a pensive expression.

I look forward to it.

He mouths the words, and there's a quirk at the corner of his lips. A smile? Or perhaps just the ghost of one.