Yuugi's lack of response emboldens Kaiba, and his slender fingers reach further, settling at the other man's shoulder.

Warm. Present. Real.

Kaiba still doesn't trust it, really, but he has nothing to lose at this point, and so he decides to sate a curiosity he'd had ever since he'd met Yuugi, by reaching out to touch his hair. Bangs first, then the fluffy red and black tinted locks. He's not delving his fingers deeply, nothing of the sort--he's just brushing through, carding the tips through the stiff locks.