[Kaiba's first impulse is to continue ignoring that volleyball-dork™ exists, since in a perfect world he wouldn't but that would have also felt marginally like a concession in some form. The idea had to be reinforced that no matter how humiliating the earlier incident had been, it held no sway over later actions]

Ah, Iwaizumi. [The words sounded pleasant but almost too saccharine, and the smile on his lips seemed unnatural and a touch smug as he turns to make eye contact. Should the other male be concerned? Most definitely.] I should have assumed this was your handiwork. [As if he could have missed seeing the other boy on the field- but it was just a gentle reminder about how little Kaiba cared about the other male, said in the nicest way possible]

I trust there are no hard feelings from before? I won't make excuses but we met under unique circumstances that did both of us a disservice.