Chuuya & Irina
Neither of them really did sweet, not intentionally. And Chuuya couldn't say much about her teasing because he would've done the same thing. But that's just how they were with each other.
"Will you? How nice," he said before leaning in to whisper into her ear. "Do you think it'd be rude if I took the host of this party into her office for a little while?" Actually, he didn't care if it was or not. But if Irina didn't want to leave her guests alone, then he'd wait until the party was over.