Akane did not expect someone to start flirting with him, especially not you of all people. He had shown zero interest in you overall, making it clear he was already in love with another, but you still kept coming back. Thinking you'd have already given up with your flirty antics.

But, he'd rather that you'd back off and take the hint as he tried pursuing Aoi. He had no interest in anything other than something that involved her. He was still acting cynical, as usual. “Oh, you again?”