[Yamaguchi blinks. He was expecting more questions, but Oikawa's concern actually makes sense. A food like shortcake can be pretty rich on its own, after all.]

Ah, I didn't think of that. Could you give me some of yours, Oikawa-san? [Well, he did just offer, but Yamaguchi feels better making sure. And of course he'll share the cake!] No need to worry, I don't want to drink a lot!